single adj.单一的;单个的;特指某人或某物;单身的;单人的;单程的n.单程票;单曲;单人房间;单身者;一元纸币;(网球)单打比赛;(板球)一分打;(棒球)一垒打v.挑选(一个)
双语例句
Because parrots have low reproductive success,a pair will typically produce only one clutch of two or three eggs a year. 由于鹦鹉的繁殖力低,一对交配成功的鸟儿通常每年只产下一窝,一到三个鸟蛋。