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1.embark on 从事，着手
例句：To diversify one's business is to embark on different kinds of commercial business.
多样化就是从事各式各样的商业经营。
2.brain tumor 脑瘤
例句：The second scan revealed a brain tumor.
第二次扫描显示出一个脑瘤。
3.rule out 排除，取消，反对，阻止
例句：We had to rule out the possibility of increased supplies.
我们只好排除了增加供应的可能性。
4.be indicative of 暗示，表示
例句：His presence is indicative of his wish to help .
他的出现表明他愿意提供帮助。
n. 冒号，结肠，科朗(哥斯达黎加和萨尔瓦多的货币单位)
