Migratory

(adj.) used of animals that move seasonally; 'migratory birds' .

欧文校对

• I can only assert that instincts certainly do vary--for instance, the migratory instinct, both in extent and direction, and in its total loss. 查尔斯·达尔文. 物种起源.
• The population is migratory, usually disappearing on the verge of quarter-day, and generally by night. 查尔斯·狄更斯. 匹克威克外传.
• They were developing a migratory life out of the more settled forest clearing life of the earlier Neolithic period. 赫伯特·乔治·威尔斯. 世界史纲.

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