keep track of的用法和樣例：
例句
- Please ask if you cannot keep track of what I'm telling you.
如果你們聽(tīng)不懂我所講的話(huà)，請提問(wèn)。 - As a doctor James has to keep track of the latest developments in medicine.
作為一名醫生，詹姆斯必須了解醫學(xué)的最新發(fā)展動(dòng)態(tài)。 - Keep track of the time you actually travel.
把你旅行的實(shí)際時(shí)間記錄下來(lái)。
