戴口罩前抖一抖？专家：没有实际意义【吉言英语】

【头条播报】
The Shanghai Center for Disease Control and Prevention refuted a recent rumor saying ethylene oxide residue, a known carcinogen was contained in masks. A CDC doctor said facial masks that require sterilizing with ethylene oxide are used by doctors and medical staff in operation rooms. A mask producer said most of the masks on the market are sterilized using ultrasonic waves, a process that doesn't require the use of ethylene oxide. 

【分句讲解】
①The Shanghai Center for Disease Control and Prevention refuted a recent rumor saying ethylene oxide residue, a known carcinogen was contained in masks.
上海市疾病预防控制中心驳斥了口罩中含有一级致癌物环氧乙烷的谣传。

1. refute v. 驳斥，反驳，否认
refuse v. 拒绝

You can politely refuse the invitation.
你可以委婉拒绝这个邀请。

2. residue n. 残留物，残渣
residues of pesticides 杀虫剂残余

3. carcinogen n. 致癌物质

4. contain v. 包含，含有

This drink doesn’t contain any alcohol.
这种饮料不含酒精。

②A CDC doctor said facial masks that require sterilizing with ethylene oxide are used by doctors and medical staff in operation rooms.
一位疾控中心的医生介绍，需要通过环氧乙烷消毒的口罩只有医生和医护人员在手术室中才会使用到。

1. require v. 需要，要求

常见用法：
a. 后面加宾语从句
b. require sb to do sth 要求某人做某事
c. 后面跟名词或动名词

2. sterilize v. 给……消毒，给……灭菌
sterilizer n. 消毒器，灭菌器

③A mask producer said most of the masks on the market are sterilized using ultrasonic waves, a process that doesn't require the use of ethylene oxide.
一位口罩生产商表示，市面上大部分的口罩是使用超声波灭菌的，该过程无需使用环氧乙烷。

1. ultrasonic adj. 超声波的

ultrasonic waves 超声波
an ultrasonic generator 超声波发生器