emigrations的音标：...

n.移居外国，迁移出境( emigration的名词复数 )，（总称）移民...

migrations的音标：...

n.迁移，移居( migration的名词复数 )...

It foundered during the turmoils accompanying the Great Migrations.它在随着民族大迁徙而出现的混乱中崩溃.They are sexually mature at this age and begin to participate in the breeding migrations.在这个时候它们性征发育成熟并开始参与繁殖大迁徙.This old so - called ...