hydrasuit       
noun [ C ] uk/ˈhaɪ.drə.suːt/ us/ˈhaɪ.drə.suːt/
 高领连体泳衣
a style of swimming costume with a high neck
  Hydrasuits are good for wearing under a wetsuit. 高领连体泳衣很适合穿在潜水衣下面。 
 Check out our hydrasuit range of swimsuits. 请看看我们的高领连体系列泳衣。 
 - More examples
 - A hydrasuit offers a little more coverage than the standard swim suit.
 - This hydrasuit features a high neck and open back design.
 - I have a new hydrasuit for swimming in the ocean.