keep track of
[ki:p træk ɔv]
跟上…的進展;掌握…的最新消息
If you keep track of a situation or a person, you make sure that you have the newest and most accurate information about them all the time.
EXAMPLES
1. With eleven thousand employees, it's very difficult to keep track of them all.
對於一支 1.1 萬人的員工隊伍，很難及時了解到所有有人的動態。
2. It's hard to keep track of time in here.
在這裡很容易忘了時間。
昨天的每日一詞
spy on
[spai ɔn]
v. 暗中監視，窺探（某人或事物）
To spy on someone or something means to watch them secretly.
EXAMPLES
1. Have you been spying on me?
你是不是一直在暗中監視我？
2. He was sent to spy on the enemy's movements.
他被派去偵察敵人的行動。