笔帽

the cap of a pen

1. 给毡头笔套上笔帽，不然就乾了。
   Put the top back on that felt-tip pen or it will dry out.
2. 你的笔帽松了，很快就要掉了。
   The top of your pen is going adrift and will soon fall.

笔的英语翻译：

帽的英语翻译：