| 单词 | 持戒 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔ARMY〕The United States placed its forces in the region on alert. 美国让该地区的军队保持戒备状态。朗文写作活用〔guard〕The police have questioned him thoroughly, and he'll be on his guard.警方已经对他进行了详细的盘问，因此他会保持戒备心理。柯林斯高阶 |
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