| 单词 | signal |
| 释义 | 词性词形谱 signal 高中必修500 全国卷频次：5 教材出处：译林版必修B3U2 /ˈsɪɡnəl/ n.&v. signals 2signals 0 signalling 0 signalled 0 信号 & 用信号通知，标志；发信号，打信号 高考真题原句提选：A green light 【signals】 that the amounts of the three nutrients are healthy; yellow indicates that the customer should be 【alert】; and red means that the food is high in at least one of the three nutrients and should be eaten in 【moderation.】绿灯表示这三种营养素的含量是健康的；黄灯表示顾客应该 "警惕"；红灯表示该食品至少含有三种营养素中的一种，应该 "适量 "食用。(2014年上海卷语法及词汇B节)Signal rescuers for help.向救援人员发出求救信号。The best time to signal rescuers is during the day.向救援人员发出信号的最佳时间是白天。Signals were also poor that far out.那么远的地方信号也很差。The computer also counts the loads and gives a signal by phone when the box is full.电脑也会计算载荷，并在箱子满时通过电话发出信号。 |
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