na. 弥补不足;辛辛苦苦维持(生活);节省地消费

This is scientific American's 60-Second Science, I'm Christopher Intagliata. Got a minute? The yeast Candida albicans ekes out a quiet living in our gut. But its a tough life. It faces acids and enzymes, and the immune system always bullies invaders.

发表于:2018-12-24 / 阅读(94) / 评论(0) 分类 Scientific American(五)月

迷你对话: A: What did you say when she told you the news? 当她告诉你这个消息时,你说什么? B: I clammed up. And finally, I asked her to chew the cud for such an important decision. I could not have the heart to disappoint her wi

发表于:2019-02-15 / 阅读(81) / 评论(0) 分类 迷你对话学地道口语
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acatenangoes
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amyum
anti-hail gun
Arawa
argyrol
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baggs
bestow upon
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