(资料来源:英国奥林匹克队网页) 例句 Mary has decided to open a clothes shop in spite of the current economic recession. Let's see if she will sink or swim. I've been accepted by one ...

Please explain "sink or swim" in this sentence: "Nobody really taught us anything. We had to find our own way. Basically, it was sink or swim." My comments: If a swim coach throws a new comer head ...