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eg: Please clean up the litter.
请清理这些垃圾。
litter on the floor
loudly adj.
大声地
eg: Don't speak so loudly in classroom.
不要在教室大声说话！
talk loudly in class
full adj.
满的
eg: Oh, the glass is full.
噢，那个杯子满了。
speak with mouth full
noise n.
噪音
eg: I didn't sleep well because of the noise.
因为噪音，我睡得不是很好。
make a noise
keep v.
保持
eg: Please keep silent!
请保持安静！
quiet adj.
安静的
eg: Please be qiuet！
请安静！
keep quiet
wait in line
排队等待
eg: There are so many people, so we need to wait in line.