1.millions n. million的复数，表示数百万
例句：Millions were slaughtered in the war.
2. comet n. 彗星
例句：That comet is invisible to the unaided eye.
3. century n.1.100年，百年 2.世纪 （简单词汇）
Soccer is played by _____ people all over the world, but there have only been few players who were truly great.
A.million of B.millions of C.millions D.two millions of