The Chinese translate have several item mistranslated. May confuse players.
eg.
"block.create.encased_shaft": "齿轮箱" 齿轮箱 in Chinese means "gear in the box". But here the item obviously is "shaft in the box". 传动箱 may be better as the "block.create.shaft": "传动杆".
"block.create.encased_belt": "连携齿轮箱" 连携齿轮箱 in Chinese means "co-working gears in the box". 皮带箱 may be better, it means "belt in the case".
And there are more.

Aside of mistranslated problems. Some item description translation have sentence/word missing.
eg.

"block.create.cuckoo_clock.tooltip.behaviour1": "Shows the _current_ _time_ and plays a tune twice a day. _Activates_ once at _noon_ and at dusk, as soon as _players_ _can_ _sleep_.",

"block.create.cuckoo_clock.tooltip.behaviour1": "显示 _当前时间_ 并且一天会咕咕_两次_. ",

"Activates once at noon and at dusk, as soon as players can sleep." is missing.

I would be glad if I can join the translate work and polish it as possible as I can.

Hi, thanks for letting us know. If you want to help improve the Localization, you have two options:

• Create a pull request on github with your changes
• Send us a link to your modified version of the lang file via a paste/file-sharing platform.