20140122 每日三單字 (swift / nectar / migration)

swift

快速的，快捷的
The river is too swift to swim . 這河水流太急，不能游泳。
立刻的，即時的
I noticed a swift change of expression in his face . 我注意到他臉上的表情很快地變化。
（行動）快的[F][+to-v]
He is swift to take steps . 他很快採取措施。
He is swift to take offence . 他動輒生別人的氣。

nectar

【植】花蜜
The bees spend the summer collecting nectar and turning it into honey . 蜜蜂夏天採集花蜜並將它釀成蜂蜜。
【希神】【羅神】神酒，瓊漿玉液


migration

遷移；（候鳥等的）遷徙[U][C]
There has been a migration of people from the country to the towns . 人們從鄉下移居城鎮。
the annual migration of birds 候鳥每年的遷徙
移民群；移棲動物群[C]