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1.be good for 有益于
例句：This would only be good for Japan.
对日本来说，这实在是一个好消息。
2.stay ahead (比…)领先
例句：In early 2010, the company was profitable, then it embarked on its aggressive expansion to stay ahead of competitors.
2010年早些时候，公司是盈利的，随后它就开始大举扩张，以保持在行业内的领先。
3.remote-controlled 遥控的
例句：Remote-controlled machines smash the sulfide deposits, which are then hoovered up through a riser pipe to a vessel on the surface.
硫化物沉淀会先被遥控机器粉碎，然后通过一个升流管被吸到位于海面的容器中。
4.be able to 能够
例句：We want a man who must be able to cost.
我们需要一个能计算成本的人。
