Periodically , the lamellae become enlarged, forming flattened, membrane - enclosed vesicles called thylakoids.片层周期性地扩展, 形成扁平的有膜为界的囊,称为类囊体.Mortality is the number or volume of trees periodically rendered unusable through...
A dentist may decide to extract the tooth to prevent recurrent trouble.牙医可能会决定拔掉那颗牙，以免反复发作。When not removed, plaque causes tooth decay and gum disease.牙斑如果不清除就会导致牙齿蛀蚀和牙龈疾病。He fought tooth and nail to keep his job.他竭尽全力保住...
戴维发誓要离开这个项目，我不得不对他表示钦佩。I had to admire David's vow that he would leave the programme.戴维·克莱门特上尉和150名突击队员今天早上对港口展开突袭。Captain David Clement and 150 commandos stormed the port this morning.戴维斯落后了差不多两秒，获得第三名。Davies finis...
High blood pressure imposes an extra load on the heart.高血压会给心脏增加额外的负担。The school imposes a very regimented lifestyle on its students.学校将非常死板的生活方式强加给学生。The Act imposes more stringent regulations on atmospheric pollution.法...