单词：sintered-glass filter crucible
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27Do not boast about tomorrow, for you do not know what a day may bring forth. 2Let another praise you, and not your own mouth; someone else, and not your own lips. 3Stone is heavy and sand a burden, but provocation by a fool is heavier than both. 4A
圣经旧约 箴言
But the HEPA filter for Olivers Vibe got dirty very quickly. And, it was not cleanableit was simply replaceable. When it turned filthy brown, Oliver went back to Target to buy a new filter. Oddly, Target sold the F15 belt for the Vibe, but not the fi
365个英语简短小故事
Lesson 6 A GLASS OF WATER 第六课 一杯水 Let us look at the water in this glass, and see what we can find out about it. It has no colour, so we say that the water is colourless. 咱们来看看这个杯子里的水吧。这杯水是什么样的呢
英国学生科学读本
He filled the pot with water. He put the pot on the burner. He put a lid on the pot. He turned on the burner. He took a bag of coffee beans out of the cabinet. He opened the bag. He poured some beans into the grinder. He ground the beans in the grind
简单慢速英语阅读
From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a
2018年VOA慢速英语(一)月
By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica
2007年VOA标准英语（五月）