a person who travels through the water by swimming;
"he is not a good swimmer"
双语例句
1. Natator depressus eggs may be more tolerant of high incubation temperatures and severe moisture stress than those of most other sea turtle species.
这似乎显示平背龟的龟卵比起其它种海龟卵，对于高温高湿有较高的容忍力。
youdao
2. This paper mainly reported species composition, biomass distribution of crabs and biological characteristic of Portunnus kaanii, P. san-guinolentus and Charybdis natator;
3. This paper mainly reported species composition, biomass distribution of crabs and biological characteristic of Portunnus kaanii, P. san-guinolentus and Charybdis natator;
