act up造句
If the pressure is too low, the heating system will
act up.
如果压力太低, 供暖系统就会出毛病.
The children always
act up when their mother is out.
母亲不在家,孩子们总是调皮捣蛋.
The young herdsman briskly mounted a horse that was inclined to
act up with an unaccustomed rider.
年轻牧民轻快地跃上一匹惯于对生人使性子的马.