In covalent bonding, atoms share electrons.在共价键联中, 原子共有电子.Crystals may be classified as either ionic or covalent by analogy with molecules.与分子的情况一样,晶体也可以分为离子键型和共价键型.Ceramics primarily have ionic bonds, but covalent bondi...
Halogen bond is known as a kind of non - covalent intermolecular interaction.卤键是一种类似氢键的分子间弱相互作用.Chemical bond mainly includes electrovalent bonds , covalent bonds, and metalic bonds.化学键主要有离子键 、 共价键 、 金属键.Additionally, co...
总统赦免了手下的官员，把过失揽到自己的头上。The President absolved his officers and took the blame upon himself.他得到了总统的赦免。He was granted a presidential pardon.悔罪者可得到赦免.Remission of sins is promised to those who repent....
陶瓦地板使这个地方给人一种非常舒适温馨的感觉。The terracotta tiled floor gives the place a wonderfully homely character.城墙下的住宅区, 窄小的鹅卵石铺成的街道两旁是石灰粉刷、陶瓦盖顶的房屋.In the residential area below, narrow cobblestone streets are lined with whitewashed ho...
They joked and drank coffee and filled themselves with chocolate cake.他们开着玩笑，喝着咖啡，尽情地吃着巧克力蛋糕。They joked about his ineptitude.他们取笑他的笨拙."I'm a real intellectual-type guy, Tracy," James joked. "Oh, give me a break," Tr...
那辆失控的车猛冲到一条长椅上，撞伤了一对老夫妇。The runaway car careered into a bench, hitting an elderly couple.长椅周围的人群渐渐散去了。The crowd around the bench began to melt away.我们非常拘谨地坐在长椅的两头。We sat primly at either end of a long settee....