Their teacher thumped her pen on her book.
他们的老师把她的钢笔重重地摔在她的书上。
Steady your hands by holding a clicker, pen, book, or notebook.
抓住遥控器、钢笔、书本或笔记本来稳定自己的双手。
After placing quite a number of everyday objects on a table, he asked various members of the class to give him the ruler, the book, the pen and so on.
在一张桌子上摆了许多日常用品之后,他请全班同学给他挑出尺子,书本,钢笔等。
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