这里从大约公元前4000年就有了农业生产的痕迹，最初是沿着河谷使用轻便工具，公元前3000年后使用犁。

Evidence of farming dates from about 4000 B. C., first in the form of light tools along stream bottoms and then, after 3000 B. C., in the form of plows.

youdao

你也可以找到露营用品，比如轻便的桌椅和钓鱼工具。

You can also find camping goods, such as lightweight chairs and tables, and fishing tools.

youdao

这个工具对于那些想要轻便地跟踪关键字和话题，特别是热门主题的人来说非常有用。

This tool is very useful for anyone wanting a lightweight way to watch keywords and topics, especially if they are topical memes.

youdao