Together, four soap companies and two projects supported by the U. S. Agency for International Development (
为宣传有效的香皂洗手，以减少儿童腹泻病的发生，四家香皂公司以及由美国国际开发署（USAID）支持的两个项目，共同设计了一起广告宣传活动。
Now it is four to one—and on course to be two to one by 2050.
如今这个比例是一比四，而且到2050年这个数字将逐步变为一比二。
I was rescued two hours later by four of my staff.
两个小时后，我的四名部属赶到救了我。
A game, especially a golf match, played by four persons, two on each side.
四人对抗赛四人玩的游戏，尤指高尔夫球赛中的双打，每边两人。
Badminton can be played by two or four people.
羽毛球可由两人或四人来打。
Eight divided by two equals four.
八十除以四等于二十。
Eight divided by two equals four.
八十除以四等于二十。
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