来回奔走;左右奔走;
Walking up and down the stairs would beat any of the excise machine.
上下楼梯可比什么健身器都好.
Then ask the students to fall down and up the beat of the drum.
让学生听著鼓声的节奏来倒地、起身.
They beat up and down for truth.
他们为寻求真理而东奔西忙.
We beat up and down and got tired today.
今天我们四处奔跑,弄得很累.
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