单词:sterilizing equipment decontaminating apparatus
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VOA美语咖啡屋 Lesson 50:Scuba Diving Y: 各位听众好,我是杨晨,欢迎您到美语咖啡屋。 J: Hello I'm Jody and welcome to American Cafe. Hey, Yang Chen, guess what this sound is. (Enter breathing sounds) Y: 噢,听不大出来,好
Y: 各位听众好,我是杨晨,欢迎您到美语咖啡屋。 J: Hello I'm Jody and welcome to American Cafe. Hey, Yang Chen, guess what this sound is. (Enter breathing sounds) Y: 噢,听不大出
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? On June 4th we told you about iron snowflakes on Mercury. Today we have some radical news about the atmosphere of Venus. Literally, a radical is a molecule that reacts e
Juanita: Hey, where have you been? I was going to invite you to lunch, but you werent at your desk. Bill: I was at a training. Juanita: What was it on? Bill: Office hygiene. Juanita: Hygiene? Youre kidding. Your office is pretty messy but I wouldnt s