Chiseling a two-foot tunnel can take ten days of hard labor for the pair.
要开凿出一条2英尺长的隧道，会消耗掉它们十天的高强度劳动。
Foot massage is bodily labor, practicing the same movement over and over again makes this girl tired. The students train the strength in their fingers and arms every morning.
捏脚是个体力活，同一个动作的反复练习让一个女孩有些疲惫。学员们每天早操都会练习指力和臂力。
This method can reduce the amount of rocks and the amount of labor, but the effect will be poor at the foot of the rockery shoot some.
这种方式可以减少山石用量和用工量，但假山的山脚效果会梢差一些。
The division of labor of hand and foot, it is a milepost of human evolution.
手与脚的分工，是人类进化的一个里程碑。
The division of labor of hand and foot, it is a milepost of human evolution.
手与脚的分工，是人类进化的一个里程碑。
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