anonymity

匿名；匿名者；无名之辈英释中释nwhen other people do not know who you are or what your name is

1 on condition of anonymity,在匿名的情况下

1 Every step will be taken to preserve your anonymity..将采取各种措施确保你的姓名保密。

2 One official, who spoke on condition of anonymity (= he would only speak if his name was not told ) , said the White House took the threat very seriously..一位不愿公开姓名的官员称，白宫非常重视这一威胁。

3 the anonymity of city streets (= you do not know anyone, and no one knows you ).城市街头人人互不相识