trap bottom wagon [车辆] 活底货车 ; 底开门车
Don't fall into the trap of thinking you'll relax once you reach the bottom of the list - there will always be something more to do.
不要总幻想你只要做完清单的最后一件事情就可以休息，因为永远都有做不完的事情。
But without ballast weighing down the bottom, the boat would list to its side and could trap Spotz underwater.
但是，如果在船舱底部没有压舱物，这船会向一边倾斜，这样会把斯伯茨困在水下。
Accumulated dirt and sludge can be removed by "blowing down" through the drain in the bottom of trap.
通过疏水阀底部的排放阀可以清除累积的污垢和淤泥。
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