none 是什么意思（荧光none是什么意思）



It’s fine to use dim lights, lamps and reading lights, but you should try to avoid exposure to devices that emit blue light — computers, fluorescent lights, television screens, smartphones — within two to three hours of the time you’d like to fall asleep.

02

词汇解析

dim [dɪm] adj. 暗淡的，昏暗的，微弱的

lamp [læmp] n. 灯，台灯

exposure [ɪkˈspoʊʒər] n. 面临，遭受，暴露（长搭配介词to）

device [dɪˈvaɪs] n. 设备

emit [iˈmɪt] v. 发出，散发

fluorescent [ˌflɔːˈresnt] adj. 发荧光的，发亮的，强烈反光的

03

结构分析

✔句子主干：

It’s fine to use dim lights, lamps and reading lights, but you should try to avoid exposure to devices

✔定语从句：

that emit blue light

✔状语：

within two to three hours of the time you’d like to fall asleep

✔插入语：

computers, fluorescent lights, television screens, smartphones

04

参考译文

It’s fine to use dim lights, lamps and reading lights, but you should try to avoid exposure to devices that emit blue light — computers, fluorescent lights, television screens, smartphones — within two to three hours of the time you’d like to fall asleep.

使用暗灯、台灯和阅读灯没问题，但你应该尽量避免在你想睡觉的两到三个小时内接触发出蓝光的设备，比如电脑、荧光灯、电视屏幕、智能手机。

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