1. good luck with sth 祝...好运/顺利
Good luck with your studies in the United States.
祝你在美国学习顺利。
Good luck with your driving test: I keep my fingers crossed for you.
希望你驾驶考试顺利,我祝你成功。
2. take care of 爱护,照料
Please take care of the baby for me for a while, will you?
请替我照顾一下这孩子,好吗?