尽一切办法，务必。

例句与用法: 1. I told the waiter by all means to bring caviare and the cheapest dish on the menu. 我告诉服务员务必要拿来鱼子酱和菜单上最便宜的菜。

2. We have to finish our task by all means. 我们必须竭力完成任务。

3. The prices are variable, shop around by all means. 价格高低不一，所以一定要货比三家逐店选购。

4. By all means, provided that it is a well- pay job. 如果这是个薪俸优厚的工作，当然可以。