a sure card的用法和样例：
例句
- We hold a sure card to be practicable.
我们认为万全之策是切实可行的。 - The Japanese war lords had looked for a certainty.
日本军阀要想寻求万全之策。 - He is a man whom you can depend on.
他是个你可以信赖的人。 - We must find a reliable person to deal with it.
我们必须找到一个可以信赖的解决这个问题的人。
词汇搭配
- play a sure card 采用可靠的计划...
