all out - 全力以赴：

1. using all available resources
同义词：all-out, full-scale

例句与用法:
1.    The team is going all out to win the championship.
    这个队为了争取冠军而全力以赴。
2.    They do whatever they are doing -- all out.
    他们做任何他们所做的事--都是全力以赴。
3.    Now he is in trouble, we should go all out to help him.
    现在他正遇到了麻烦，我们应该全力以赴去帮助他。