1.lose weight 减肥
例句:If you want to lose weight you should eat less bread.
如果你想减轻体重,你应该少吃面包
2.participate in 参加;参与
例句:No professionals participated in the contest.
没有职业选手参加这一比赛
。3.work with 与...共事;起作用;利用
例句:For the sake of convenience we shall work with the space.
为了方便起见,我们将利用空间
。4.an average of 平均是;平均为
例句:An average of one new star is born in our galaxy each year.
平均每年在我们的星系中会诞生一颗新的恒星