1. good luck with sth 祝...好運/順利
Good luck with your studies in the United States.
祝你在美國學習順利。
Good luck with your driving test: I keep my fingers crossed for you.
希望你駕駛考試順利,我祝你成功。
2. take care of 愛護,照料
Please take care of the baby for me for a while, will you?
請替我照顧一下這孩子,好嗎?