What was neat about it is before that time, the predominant species to use for air conditioning or refrigeration was ammonia.
在这之前是很整洁的,之前最主要的用于空调或者冰箱的,物质是氨。
So, you say to your roommate because you want the house to be clean and things to change.
为了屋子变得整洁,情况有所改善,你可以跟你的室友说,
Sometimes they challenge and contradict one another, but they are not best seen as linear, as telling a neat, linear story about Israelite religion flowering and fading.
有时候它们相互对质或矛盾,但它们从未被当作线性结构,整洁有序的故事,关于以色列宗教的兴盛与衰落。
Let's re-draw this, so it looks a little bit neater, where we have a triple bond in the middle instead, and again, we need our negative 1 charge there.
让我们重写这个,这样看起来更整洁一点,我们有一个三键在中间,同样地,我们这里需要一个负电荷。
It looks cleaner; right?
看起来是整洁的,对不?
Ads in newspapers, like this one in Charleston, would read, "Negroes wanted. I am paying the highest cash prices for young and likely Negroes, those having good front teeth and being otherwise sound."
报纸上的广告,比如查尔斯顿市的这一则,是这么写的,"诚购黑奴,本人愿付最高价格,购买年轻可靠之黑奴,需有整洁的牙齿以及悦耳的声音"
I mean, you'll get some people who look very preppy and really clean and tidy, and well-presented.
我的意思是,你能看到一些人看起来非常干净整洁,表现出色。
The presence of both Mars and Venus suggests you want to box everything into a neat, ordered, structured way but keeping a piece of jade or carnelian close will help you keep in touch with your fun side."
火星和金星的同时出现表明,你想把东西整洁有序地打包好,随身携带一块翡翠或玛瑙,会使你获得愉悦的心情“
I clean and maintain the park and make sure it's nice and clean and everything.
我打扫公园,维护公园的面貌,确保公园的方方面面都是漂亮、整洁的。
proper hygiene and things that nature.
保持卫生整洁以及一些其它的习惯。
So it looks a lot less messy if we just draw our Lewis structure like this for h c n, where we have h bonded to c triple bonded to n, and then a lone pair on the nitrogen there.
这看起来整洁了不少,如果我们把氰化氢的路易斯结构画成这样的话,这样我们就有氢与碳之间的单键和碳与氮之间三键,然后还有一对孤对电子在氮这里。
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