Guaranteeing the safety of students requires continued vigilance on the part of teachers.要确保学生安全,教师得时常保持警惕.This tradition of guaranteeing anonymity began to develop quickly.这种担保匿名的传统便开始迅速扩展开来.Thethe goal , keeping improv...
志愿者记录下他们一周所吃的所有食物。The volunteers kept a record of everything they ate for a week.新的饮食类书籍差不多一周出一本。New diet books appear at a rate of nearly one a week.他们在一周内就画出了房子的图样。They drew up the design for the house in a week....