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...
The indefatigable Walters was in his element.精力充沛的沃尔特斯真是得其所哉.His indefatigable spirit helped him to cope with his illness.他不屈不挠的精神帮助他对抗病魔。His indefatigable spirit helped him to cope with his illness...他不屈不挠的精神帮助他对抗病魔。He ...
Of course, slap-bang in the middle of town the rents are high.当然啦，市区正中心的租金是很高的。The bang came suddenly, echoing across the buildings, shattering glass.突如其来的一声巨响在建筑物间回荡着，震碎了玻璃。There was a huge bang; it sounded like a super...
The place was tranquil and appealing.那个地方恬静宜人。The tranquil atmosphere of The Connaught allows guests to feel totally at home...康诺特酒店的宁静氛围让客人完全找到了宾至如归的感觉。Yachts peppered the tranquil waters of Botafogo Bay.博塔福古湾宁静的水面上挤满了游...