Hos
abbr. 人骨肉瘤细胞（human osteosarcoma cell）；高阶统计量（higher-order statistics）
🗣️ 情景例句
to be with people--people his own age.
和别人交往像他那般年纪的人。
When are you off?
你什么时候动身？
The train was late but nobody knew the reason for the delay.
火车晚点了，但没人知道为什么。