1·公元前221年至公元前210年，他开始修建长城。
Between 221 and 210 B. C., he started the building of the Great Wall.
2·春秋时期（公元前475-221年）有个人叫季札。
In the Spring and Autumn period (475-221 BC) there lived a man called Ji Zha.
3·30分钟燃烧221卡路里。
Burns 221 calories in 30 minutes.
4·在研究的544名患者中，有221人患有耐多药结核。
Of the 544 patients studied, 221 had MDR-TB.
5·晴天：221
Sunny days: 221
6·公元前221年，秦统一中国后统一了中国文字。
In 221 BC, Qin dynasty unified China and the Chinese words.
7·32层的宾馆将有221个房间和128间多功能用房。
The 32-floors hotel will have 221 Numbers and 128 utility rooms.
8·宣称我们将实行“焦土政策”。
We will pursue our own 'scorched earth' policy "(Lewis, 221; 224)."
9·不过至今为止我们已经救出了二百二十一个人，并且我们还将尽可能的继续营救。
But we have saved 221 people so far and we will continue to do our best.
10·总计221例(8%)受试者有50%或以上的无症状的颈动脉狭窄。
In all, 221 (8%) of the subjects had asymptomatic CAS of 50% or greater.