We have 'keep something at bay', 'stave off', and 'drive'.

我们有“避免某事发生”、“避开”和“驱使”。

The expression we are looking at is 'keep something at bay'.

我们今天要学的表达是 keep something at bay。

If you keep something at bay, you appear to be in control of the situation.

如果你牵制住某事物（keep something at bay），你似乎控制住了局面。

We've had 'keep something at bay' — prevent something bad affecting you.

我们学了“避免某事发生”——防止不好的事情影响你。

To keep something at bay means being unable to move closer while attacking or moving toward someone or something.

" keep sth at bay（无法再接近）" 意思是当攻击或者靠近某人或者某物时，无法更进一步接近了。

Just like our first expression, 'keep something at bay' and again, this is something we often use with health.

就像我们学的第一个表达，“避免某事发生”，同样，我们经常把它和健康一起使用。

So, this headline is suggesting that eating dark chocolate can help prevent you from losing your memory as you get older. The expression we are looking at is 'keep something at bay'.

所以，这个标题暗示吃黑巧克力可以帮助防止你随着年龄的增长而失去记忆。我们看到的表达方式是“保持距离”。