跨过波托马克河就是五角大楼 —— 一座奇特而又低矮的五边形建筑.Across the Potomac River is the Pentagon, a strange, low, five - sides building.历史记载认为,正五边形具有神秘的力量.The regular pentagon has been credited with magical powers throughout recorded history.是的...
FDA批准 美法仑 ( 左旋苯丙氨酸氮芥 ) 上市.Melphalan ( L - PAM ) is approved by FDA for marketing.在合成工作中发现:在NAE18与氮芥芳基磷酰氯的反应过程中, 4- 二甲氨基吡啶 ( DMAP ) 起着关键性的催化作用.In the reaction of NAE 18 with nitrogen mustard aryl phosphorochloridate, 4 - ...
Some of the cationic proteins are bactericidal.一些阳离子蛋白质是能杀菌的.Potent intracellular bactericidal action may be exerted through the myeloperoxidase - hydrogen peroxide - halide bactericidal system.强烈的胞内杀菌作用可以通过骨髓过氧化物酶 - 过氧化...
你们好. 上车吧. 欢迎来到儿童冰球世界.Hi, everybody . Hop in. Welcome to the world of kids hockey.克里斯托弗, 这场冰球打得真精彩,你的球艺真棒.Christopher, what an excellent game ! You're a terrific hockey player.克里斯托弗, 你最喜欢的冰球队员是谁?Christopher, who'...