英语常用词疑难用法-115：at
“对…做出回应”常常英文就用介词at。
at his suggestion根据他的建议
at my request应我的请求
at her signal一看到她发出信号
at the ringing of the bell应铃声一响
at the call of the mayor应市长的号召
at the advice of the doctor遵照医嘱
At the initiative of Belarus the UN General Assembly adopted on Oct. 19, 2006 a resolution on fighting trafficking in persons. 在白俄罗斯的倡议下，联合国大会在2006年10月19日通过了一项打击人口贩卖的决议。
At her insistence, the matter was dropped. 在她的坚持下，该事项撤销了。
但是advice和recommendation前面也可以用on而不用at（用on似乎比较庄重正式）。
on the doctor's advice遵照医嘱
Our friends ordered scallops at the recommendation of the waitress. 我们的朋友们按照女招待的推荐，点了鲜贝。
on the recommendation of the European Commission按照欧洲委员会的推荐。
at the opposition of somebody可以有两个相反的意思。一个是“对某人的反对表示让步、顺从”，另一个是“不顾某人的反对”。前者例如：The prince wanted to go the the hills and take up defense position there, but at the opposition of his generals he changed his mind. 王子本来想转移到山上去布防，但是经不起将领们的反对，改变了主意。后者例如：The black professor moved his family into a predominately white community at the opposition the white neighbors. 黑人教授不顾邻居们的反对，把家搬进了一处以白人为主的社区。
