When you see a rattlesnake poised to strike, you do not wait until he has struck to crush him.

When you see a rattlesnake poised to strike, you do not wait until he has struck to crush him.

当你看到一条响尾蛇准备攻击时，你不要等到它攻击时才把它压碎。

-- Franklin D. Roosevelt 富兰克林·罗斯福