Mechanical friction
[化] 机械摩擦
🧩 词语组成解析
🗣️ 情景例句
and leave the number with the baby-sitter.
把餐厅的电话告诉临时保姆。
Would you ever have imagined him becoming a politician?
你想过他能当上政治家吗？
Collecting, by occupying spare time so constructively, makes a person contented, with no time for boredom.
收藏活动通过富有建设性地利用业余时间使人感到心满意足，不再有无聊之日。