外毒素对几乎所有生命形式包括人有毒. 具有 广谱 杀虫活性.It is toxic to almost all forms of life including humans. It has broad - spectrum insecticidal activity.外毒素是RNA聚合酶的抑制剂,在各个生化过程中与ATP起竞争作用.Beta - exotoxin is an inhibitor of RNA polymerase and...
可以把这些花瓣跟米饭一起煮，使米饭变成黄色。The petals can be cooked with rice to colour it yellow.她掰开玫瑰花，将花瓣撒在坟墓上。She tore the rose apart and scattered the petals over the grave.花瓣展开，一只蜂王露了出来。The flower opens to reveal a Queen Bee....
families threatened with repossession受到房子将被收回威胁的家庭Unless repossession forces a sale, homeowners prefer to sit tight when markets are weak.除非回收房强制销售, 不然房主在房市低迷时更愿保持观望状态....
school的近义词有：college, university, institute, school, academy。下面这些名词均含有"学院，大学"的含义：college：多指大学内的学院，分科学院或科目较少的高等学校。university：主要指综合大学，一般由多个学院组成。当泛指大学时通常用college表示。institute：指设立有专门学科的学院，如外语学院、地质学院、建筑学院等。school：指大学所属的学院或系。aca...