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。
2
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。
3
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.