| 单词 | keep a careful watch on |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔watch〕He needs to keep a careful watch on his outgoings.他需要仔细关注自己的日常开销。外研社新世纪〔watch〕The male keeps a careful watch on their every move.那个男子密切留意着他们的一举一动。麦克米伦高阶 |
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