Custodier
n. 监护；看守；保护；保管, 照管；监禁；拘留, 羁押
🗣️ 情景例句
I don't know.
我不知道。
I beg your pardon!
对不起！
he identifies himself with its centre of gravity, its mass, its weight;
他把自身和物体重心、质量、重量融为一体。