| 单词 | 作信号 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔buzz〕To make a signal with a buzzer.用汽笛声作信号美国传统〔light〕To signal, direct, or guide with or as if with illumination.引导：用照明或好象利用照亮作信号、引导或指导美国传统〔watch fire〕A fire kept burning at night, as for a signal or by a guard.营火：夜间保持燃烧之火，如用作信号或警戒美国传统The police officer held up his hand as a signal (for us to stop).警官举起手当作信号(让我们停下)。剑桥国际 |
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