聚羟基乙酸的经典制备方法主要有两种:直接缩合聚合法和乙交酯开环聚合法.There are two means available for the preparation of PGA - synthesis polymerization and ring - opening polymerization....
她的书信描绘了她在缅甸生活的一幅绝妙图画.Her letters paint a wonderful picture of her life in Burma.缅甸军队成功地重新占领了这个地区.Burmese troops successfully recaptured the region.她从未放弃过她的国籍。即便如此，反对者仍然说她不是真正的缅甸人。She has never given up her nationality. E...
The judge invoked an international law that protects refugees.法官援引了一项保护难民的国际法。The ozone layer surrounding the earth protects our skin from being hurt by the ultraviolet rays.环绕地球的臭氧层保护着我们的皮肤免受紫外线的伤害.The thick coat of the...
他手指哆嗦着从口袋里取出相机.With trembling fingers, he removed the camera from his pocket.我只是站在那儿，吓得直哆嗦。I just stood there quaking with fear.房间里现在暖和了, 但他仍然哆嗦.The room is warm now, but he is still trembling....
这个故事的叙述者朱尔斯是个年近不惑的女演员。Jules, the story's narrator, is an actress in her late thirties.故事的叙述者是位年近四十的女演员。The story's narrator is an actress in her late thirties.他们发现叙述者只是一味地嘲讽。They find only irony in the narrator...
The main controlling factors of reservoir developing are lithology , lithofacies and ancient weathering crust karstification.储层发育的主要控制因素为岩性和岩相、古风化壳岩溶作用.And then studied the origin and lithofacies meaning of siderite.在此基础...
处于领先位置的竞争者仍在激烈地角逐。The leading contenders are still slogging it out.她为什么老是那么言词激烈地指责我粗野无礼 呢 ?Why has she been flinging charges of rudeness at me?她一想到他心就开始激烈地跳动.At the mere thought of him her heart began to beat fiercely....