catch someone's drift
US /kætʃ ˈsʌm.wʌnz drɪft/
UK /kætʃ ˈsʌm.wʌnz drɪft/

1.
明白意思, 領會意圖
to understand the general meaning or intention of what someone is saying
:
•
I think I catch your drift; you want me to finish this by tomorrow.
我想我明白你的意思了;你希望我明天之前完成這個。
•
He spoke vaguely, but I still managed to catch his drift.
他講話含糊不清,但我還是設法明白了他的意思。