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1.happy-go-lucky 乐天的
He is a happy-go-lucky man as if he has no worries and cares in the world.
他是个无忧无虑的人，好像世上没有任何让他发愁和烦恼的事。
2.is believed to 认为
The newspaper is believed to have been unprofitable for at least the past decade.
据信这家报纸至少在过去10年中都没有盈利。
3.removed from 移除
Small veins are removed from the leg and used to bypass the blocked up stretch of coronary arteries.
从腿部取出一些细小血管，用来对堵塞的冠状动脉进行分流。
4.come upon 遇到
I came upon an irresistible item at a yard sale.
在一次庭院拍卖会上，我偶然发现了一个忍不住想买的东西。
5.grand jury 大陪审团
They have already given evidence before a grand jury in Washington.
他们已经在华盛顿的大陪审团前作证。
