Instantaneous axis(of rotation)
[化] (转动)瞬轴
🧩 词语组成解析
🗣️ 情景例句
do you need any help?
需要帮忙吗？
You should wear a sweater, It's cold today.
你应该穿一件毛衣，因为今天很冷。
We need our order separated into three different boxes.
我们订的货需要分装三箱。