"Whereas the oil industry may find it business as usual to have a certain number of spills, it is really not acceptable, especially in this day and age.

VOA: special.2011.07.08

where the super model could not be an effective model for bikinis after a certain age.

比基尼模特在达到一定的年龄后就无法再担任这份工作了。

退休很神奇 - SpeakingMax英语口语达人

if they can find a way to let the employee go at a certain age.

如果公司能有办法让员工在适当年龄退休是最符合公司利益的。

退休很神奇 - SpeakingMax英语口语达人