hold on to
紧紧抓住，抓牢：
He held on to the rope, and slipped down the cliff slowly.
他紧紧抓住绳索，慢慢向悬崖下滑去。
保持，保留；不放弃：
He holds on to his poor life although he's rich now.
尽管他现在十分富有，可他一直保持着清贫的生活方式。
I should hold on to these photos.
我得把这些照片保留起来。
以…为依靠，依靠…的帮助：
He had no one to hold on to then.
那时他谁也指望不上了，只有靠他自己。
控制，抑制：
He's too angry to hold on to himself not to scold.
他太生气了，甚至控制不住自己大骂了起来。