1.The WHO says the studies should be done in low- and high-income countries because the poorer countries have special problems they have to work out for themselves.
work out 解決;算出;實現(xiàn);制定出;消耗完;弄懂;找到 (解決辦法等)
Negotiators are due to meet later today to work out a compromise.
談判者們預定在今天晚些時候會面以找到一個折中的辦法 。
It took me some time to work out what was causing this.
它花了我一些時間,找到導致這種狀況的原因 。
2.He says that decision is paying off in better health for their people.
pay off 付清;(某行動) 取得成功; 帶來好結(jié)果;賄賂;報復
Sandra was determined to become a doctor and her persistence paid off.
桑德拉決心成為一名醫(yī)生,她的堅持不懈終于帶來了成功 。
he investor believes that his investment will pay off handsomely soon.
這個投資者相信他的投資不久會有相當大的收益 。