The city mouse showed the country mouse all over his house.

带着乡下老鼠四处参观。

And they may also light up as you move the mouse over.

如果鼠标扫过这些键，它们也会亮起来。

Researchers also take blood samples from the mice over the next several days to weeks.

研究人员还会在接下来的几天至数周内从小鼠身上采集血液样本。

Ah, there is a mouse over there.

啊， 那边有一只老鼠。

There is a little mouse over there.

那边有一只小老鼠。

As you move your mouse over them, they will light up in turn and any subpages will appear as a kind of drop-down.

如果鼠标扫过这一排导航键，它们就会依次亮起，子页面会出现在下拉菜单中。

And as I mouse over, this is a plug-in I found.

当我将鼠标悬停在上面时，这是我发现的一个插件。

When you mouse over the menu, the different options appear.

【mouse】将鼠标悬停在菜单上时，会显示不同的选项。