... 水下管路 submersible pipeline 排出喷口 discharge nozzle 泥驳 hopper barge ...
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排出喷口
Discharge nozzle
以上为机器翻译结果，长、整句建议使用 人工翻译 。
它们在浅海的沉积物中扭来扭去，把猎物吞进袋状的微小躯体里，把水从嘴巴周围的圆锥形喷口排出去。
They wriggled around in the sediments of shallow seas, gulped prey into their minuscule, baglike bodies and expelled the water through cone-shaped spouts around their mouths.
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