作为一项预防措施，我们被告知要打开窗户让新鲜空气进来，而不要使用空调。
As a preventative measure, we are told to let in fresh air by opening the windows and not to use the air conditioners.
我建议使用位域，而不要使用掩码域或16进制的常量。
I recommend the use of bit fields rather than mask fields or hexadecimal constants.
随身携带保温杯，叫咖啡销售员将咖啡倒入杯中而不要使用一次性杯子。
Carry your own thermal mug and ask coffee retailers to fill it for you rather than taking a disposable cup.
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