adj.单独的; 独一无二的; 独自的;
adv.单独地; 独自地; 孤独地; 只,只有;

例句:
1.
Clearly, I'm not alone.
因为显然我并不孤单.
2.
Perhaps I should go alone.
也许我应该单独去看她.
3.
Warren buffett does not eat alone.
巴菲特通常不会独自吃午餐.
4.
The monthly rent alone was 16000.
单单每月租金就达1.6万欧元.
5.
China alone needs higher consumption.
只有中国需要增加消费.