at the same time

1at the same moment together 同时;一起

I know he is untrustfulbut at the same timeI must admit he is a good worker.我知道,他不可信。但是同时我必须承认他是个好工人。

Don't all speak at the same time.大家不要同时说话。

2in spite of the facteven thoughhowever尽管如此;虽然;但是

It will cost a lot of money At the same timeI think we shall need it and it will certainly be useful.这将花费好多钱,但是我认为我们需要它而且它一定会有用途的。