专业英语四级

sack sacred sadden saddle safeguard safety saint sake salesclerk saleslady saliva salmon salon saloon salvation sampan sample sanatorium sanction sandal sandstone sandy sane sanguinary sanitary sanity SAP sapling sarcastic sardine Satan satchel satin satire satisfactory saturate saucepan sauna saunter sausage savings savoury saw sawmill scaffolding scalar scale scalp scan scandal Scandinavian scant scapegoat scar scarce scare scarlet scatter scenery scent schedule scheme schoolboy schoolchild schoolgirl schoolmaster schoolmistress scoop scooter scope scorch scorn scorpion Scotch Scots Scotsman scoundrel scour scout scramble scrap scrape scratch screenplay screw scribble script scroll scrub scrutiny sculptor scuttle scythe seafood seal seam seaport seashore seasick seasickness seasoning seat seaward seaweed secondary secretarial sector secular secureness security seed seek seemingly segment seizure seldom selection selfish seller semester semicolon seminar senate seniority sensation sensible sensitive sentimental separate separation sequence sergeant series sermon serpent serviceman sesame session setback settee setting sever severe severely sewage sewer sewerage sexy shaft shake shameless shampoo shareholder shawl sheer sheet shellfish shepherd sheriff sherry shield shift shilling shipment shiver shockproof shoemaker shoplift shortage shorten shotgun shovel showcase showdown shrewd shriek shrill shrimp shrine shrub shrug shudder shutter sicken sickle sideboard sidelight siege sieve sift sight sign signal significance signpost silent silicon silky silvery similar similarity simile simplify simultaneous sincerity sinful singular sinister sink sitcom site situate situation skate skeleton skeptical sketch skid skilled skirmish skull skyrocket slack slam slander slang slant slap slate slaughter slay sledge sleepless sleet sleigh slender slice slide slim sling slip slogan slope slot sluggish slum slumber sly smack smash smear smith smoked smokeless smokestack smoky smudge smuggle snail snapshot sneak sneer snicker sniff snobbery snooker snore snug soak soapy soar sober sociable socket soda sodium soften solar soldierly sole solemn solicit solidarity solitude solo solution solve somehow sometime somewhat sonnet soot soothe sophisticated sophomore sore sorghum sos soul source southerly southward sovereignty soviet sow soy spa space spacious span Spaniard spanner sparkle sparse sparsely spawn spearhead special specialize species specification specimen speck spectacular speculate speechless speed speedometer speedway sphere spicy spider spike spill spin spinach spine spinster spiral spite splash splendour splinter spoil spokesperson sponge sponsor spontaneous sportsman sportsmanship sportswoman spot spotless spotlight spouse sprain spread springboard springlock sprinkle sprout spruce spur squad squander squarely squat squeeze stab stabilize stable stack staff stag stagger stagnant stain stainless staircase stake stale stalk stall stammer stand standardize standpoint standstill stapler starch starry startle startling state statement stateroom statesman static stationary stationery statistics statue status statute staunch steadfast stealthy steamer steeple steer stem stench step stereo sterile sterling stern stew sticky stiffen stifle stigma stimulate sting stink stir stitch stock stocking stoneware stony stool stoop stopper storey stout straightforward strain strangle strap strategy straw stray streak streamline streetcar strength stress stretch stricken stride strife striking strip striped strive stroke stroll strong structure struggle stubborn stud stuff stuffing stumble stump stun sturdy stutter stylistic subdue subjective subjunctive submit subsequently subsidiary subsidy substance substantial substitution subtle subtract suburb subway successive successively suckle sue sufficient suffix suffocate suggestion suggestive suicide suitability suited sulky sullen sulphate sulphur summarize summon sumo sunbath superb superior superiority superlative superstition supervise supplement supply support supportive suppress supreme surf surge surgery surmount surname surpass surplus surprising surrender surveillance survey survive suspend suspicious swallow swamp swan swarm swathe sway swear sweatshirt sweatshop Swede sweep sweetheart swell swerve swindler swing switch switchboard swollen syllable syllabus symbol sympathy symphony symposium syndrome synonym syntax synthesize synthetic syringe systematic