put all your eggs in one basket别把所有鸡蛋都放在一个篮子里，就是中文里说的别孤注一掷，别在一棵树上吊死。

【例句】
When planning his investments, it's unwise to put all his eggs in one basket.
当他计划投资时，孤注一掷是不明智的。

The key word here is diversify; don't put all your eggs in one basket.
这里的关键词是多样化投资，不要孤注一掷。