1.cycle out 退出
What trends from the past year will cycle out?
去年的哪些潮流將會淡出舞臺呢？

2.sign off 簽署
Contrary to expectations, Gates did not sign off on a finalized version of the concept before stepping down.
出人意料的是，蓋茨在卸任之前并沒有簽署認可這一概念的最終版本WRquOn*8|0g!^iJgX9Ag。

3.allude to 提及
Try not to allude to this matter in his presence because it annoys him to hear of it .
他在的時候千萬別提這件事，他聽了要生氣的~.-eLKH%fDG*#[B。

4.ahead of 在……之前
The Obama administration's health care reforms have been a central part of the US political debate ahead of midterm elections on Tuesday.
奧巴馬政府的醫療改革是周二中期選舉前開展的政治辯論上的一個核心議題YJ5(Z&U;v[V。