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- 他们为什么戴口罩? Why Do They Wear Masks?
- 为什么医生要戴口罩? Passage 79 Why the Doctor Wears Mask?
- 唐纳德：你为什么戴颈箍? Donald : Why are you wearing a neck brace?
- 戴口罩勤洗手 Wear a face mask and wash hands
- 他们为什么嘲笑他将在明年退休的想法? Why do they scoff at the idea that he will retire next year?
- 甚至没有人戴口罩。 No one was even wearing a mask.
- 他们为什么要想法在各民族之间挑拨离间呢? Why did they try to sow dissension among the nationalities?
- 吸烟时,不能戴口罩,会减低对自己的保护。 Masks are to be taken off while smoking, thus reducing the protection.
- 其中一个华族告朋友诉我，年轻女孩子穿着越来越暴露，象征了道德的沦落，人们却已经见怪不怪，她不明白为什么戴头巾反而会成为一个问题。 A non-Muslim Chinese friend of mine said that it was strange that covering up had become a big deal when exposing one's flesh,which to her speaks of a decline in morality,is now widely accepted,especially among youths.
- 他们为什么不戒烟呢? Why do not they quit smoking?
- 当然好!顺便告诉你,上英文课的时候,别忘了戴口罩。 Victor: Sure! By the way, don't forget to wear a face mask to English class.
- 他们为什么到城里这个地方来饮酒?我猜是想看看这穷地方的吧。 What are they doing drinking at this end of town? Slumming,I suppose.
- 他们为什么要迫使我们后退呢? What are they trying to drive us back for?
- 参与筛检过程的人员应戴口罩、眼睛护具；接触任何病患之前和之后，执行有可能引起污染的步骤之后，以及脱手套之后，都要洗手。 Staff involved in the triage process should wear a face mask (see below) and eye protection and wash hands before and after contact with any patient, after activities likely to cause contamination and after removing gloves.
- 他们为什么突然转而反对你? Why did they suddenly turn against you?
- 他们为什么成功? Why Are They Succeed Lining?
- 矽尘引起矽肺。玻璃工，磨工，采石工和筑路工人有可能患矽肺。他们戴口罩，呼吸器或面罩来预防疾 "Silica dust causes a lung disease called silicosis. Glassmakers, grinders, granite cutters, and road builders may get silicosis. They wear nose filters, respirators, or masks to prevent the disease. "
- 我不知道。他们二人都是那么好的人。他们为什么彼此仇视呢? No.Both of them are such nice guys.Why are they on such bad terms with each other?
- 他们为什么不明事理? Why can't they see reason?
- 汤姆:为什么医生和护士们都戴口罩?彼得:目的就是如果有人出了错,没有人知道是谁干的。 Tom: Why do doctors and nurses wear masks? Peter: So that if someone makes a mistake no one will know who did it.
