Plankton and nekton are pelagic organisms.浮游生物和自游生物都是海面的生物.The fish live on the plankton.这种鱼靠吃浮游生物为生。Plankton is at the bottom of the marine food chain.浮游生物处于海洋食物链的最底层.Krill swam with the plankton , a school of young men...
Acting on instinct, Collins ducked behind the door, just as the strobe flash went off.镁光灯一闪的瞬息, 柯林斯本能地躲到了门后.This material has been extracted from "Collins Good Wood Handbook".这些材料摘自《柯林斯优秀木材手册》。Daily Embouchure Drills COL...
Cold weather retards the growth of the crops.寒冷的天气妨碍作物的生长.A serologic reaction retards the growth of the pollen tube.血清反应阻止花粉管生长.Lack of sun retards plant growth.光照不足则植物生长缓慢....