kilometer

She had to battle snowstorms, landslides, snakes and loneliness on her 350 kilometer journey..在350公里的行程中，她要克服暴风雪、滑坡、蛇和孤独寂寞。

But it says food grown and harvested in the 30-kilometer exclusion zone after the emergency might be contaminated and should be avoided..但是，该组织说，事故发生后，在30公里禁区内种植和收获的食物可能受到污染，应该避免食用。

For example, the researchers last week said they had managed to gather enough energy from a TV station a half-kilometer away to power a small temperature sensor..例如，研究人员上周说，他们已经设法从半公里远的一座电视发射台收集了足够了能量给一个小型温度传感器供电。

square kilometer,平方公里