1.set up 建立;設立
例句:The security zone was set up to prevent guerrilla infiltrations.
設立了安全區以防止游擊隊員的滲入 。
2.work out 算出;解決;制定出
例句:The three parties will meet next month to work out remaining differences.
三方將在下個月會面,以解決余下的分歧 。
3.at least 至少;最低限度;起碼
例句:Try to eat at least four slices of bread a day.
每天盡量至少吃4片面包 。
4.base on 以……為基礎;以…為根據
例句:Fluctuating prices usually base on a fickle public's demand.
物價的波動往往是由于群眾需求的不穩定而引起的 。