Instantaneous center(of rotation)
[化] (转动)瞬心
🧩 词语组成解析
🗣️ 情景例句
He's had so many colds and sore throats recently.
他最近常常感冒喉咙痛。
It'll take a few more weeks for the bone to mend.
还需要花两三周骨头才能复原。
Bye.
再见。