1. on the phone
意思用法：表示正在打电话的状态。
例句：I'm sorry, I can't talk right now. I'm on the phone.

2. get back to you
意思用法：表示稍后会回复或联系对方。
例句：Let me check our inventory and I'll get back to you later.

3. due to
意思用法：由于，因为（常用于解释原因）。
例句：The meeting has been cancelled due to a sudden change in schedule.

4. in terms of
意思用法：就……而言，在……方面。
例句：In terms of product quality, we are the best in the market.

5. take into account
意思用法：考虑到，顾及。
例句：We need to take into account the budget constraints when planning the project.

6. in the long run
意思用法：从长远来看。
例句：Investing in staff training will benefit the company in the long run.

7. be in charge of
意思用法：负责，主管。
例句：John is in charge of the marketing department.

8. keep up with
意思用法：跟上，与……保持同步。
例句：I'm finding it difficult to keep up with the pace of work.

9. on a tight schedule
意思用法：时间紧迫，日程安排得很满。
例句：We're on a tight schedule, so we need to get started right away.

10. as far as I know
意思用法：据我所知，就我所了解。
例句：As far as I know, the project is proceeding smoothly.