1.serve as 担任；充当

例句:He volunteered to serve as the manager of our department store.
他自荐当我们商场的经理。

2.Cut out 切断；删去

例句:He will have his work cut out to get into the team.
他要进入该队困难重重。

3.sesame seed 芝麻

例句:Sesame seed is eatable and can be used as oil plants.
芝麻既可食用又可作为油料。

4.account for 对...负责人；对...作出解释

例句:How do you account for the company's alarmingly high staff turnover?
你怎么解释这家公司高得令人忧虑的人员流动率？