你能发出火车的声音吗？
至少我认为，我提议乘火车穿越沙漠时大家都没有异议，自行车没有发出反对的声音，大概它在闷闷不乐吧。
At least I think we agreed when I suggested crossing the desert by train. While the bike didn't voice any objections, it may have been sulking in silence.
海豹会长时间的保持一种音调，在很远的地方你就能听到，这种声音类似于火车快进站时鸣笛被塞住时发出的闷响声。
A seal can make and hold a single note for what seems like an indefinite period. You hear it in the distance and it sounds like a railroad train with its whistle stuck at a nearby station.
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