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1.be on the look-out for 特别注意 贴别堤防
例句：There are many ways to create passive income and the key is to be on the look-out for passive income producing opportunities.
有很多可以创造被动收入的方式，而其中的关键就在于你要把握这其中的机遇。
2.signify v. 表示；说明；预示
例句：The symbol displayed outside a restaurant signifies there's excellent cuisine inside.
餐馆外的招牌表明里面有美味佳肴可以享用。
