到2009年底，有3330万人携带艾滋病毒。
At the end of 2009, 33.3 million people were living with HIV.
youdao
截至6月底，该公司已售出1万的车辆。
By the end of June, the company had sold 10, 000 of the vehicles.
四年一闰，闰年于二月底增加一闰日以保证万物步入正轨。
Every four years a leap day helped keep things on track.
应用推荐
模块上移
模块下移
不移动