Be careful not to cover plants too closely, which could trap heat and defeat the purpose of shading.
注意不要把植物遮盖得过于密实，那样会使热量散发不出去，达不到遮荫的目的。
2
Or, maybe you could pickup branches and cover the bodies, but picking up those same branches and placing them over a hole could create a pitfall trap.
甚至，你可以捡起树枝然后盖住尸体，但捡起同样的树枝，盖住一个洞就能做成一个陷阱。
3
Tank and cover shall be shaped so as to prevent stagnation of water externally, and gas pocket internally which could trap escaping gas and thereby impede operation of the gas detector relay.