hydronaut
/ˈhaɪdrəʊnɔːt/a person trained to operate deep submergence vessels 潜水艇驾驶员
noun [专属名词]（美）深水潜航器工作人员
The hydronaut carefully descended into the deep-sea trench to collect samples.
这位水下作业员小心地潜入深海海沟采集样本。
单词造句:
The hydronaut carefully descended into the deep-sea trench to collect samples.
这位水下作业员小心地潜入深海海沟采集样本。