hang on to
1．hold tightly 牢牢抓住
It was so windy that I had to hang on to my hat all the way along the street．风太大，在街上我得一直牢牢抓住我的帽子。
Hang on to my hand，while we cross the street．过街时要紧紧抓住我的手。
2．rely on依靠
The only thing I can hang on to is none other than my own brain and hands．我唯一能依靠的只有我自己的头脑和手。
Her son's death depressed her so much that she thought nothing was left for her to hang on to．她儿子的死使她十分地伤心，以致于她认为没有什么是她可以依靠的了。
3．retain possession of留住；保留
You'd better hang on to those shares；they'll be going up again soon．你最好留下那些股票，它们很快又会看涨的。