1)no students disks are allowed,学生不准带盘2)WO/W Without Winch,不带绞盘3)cast iron pulley,生铁皮带盘4)standards for students,学生标准5)standard student,标准学生6)Placenta/physiology,胎盘/生理学
用法和例句
Establishment and perseverance of the standards for students is the requirements of implementing the spirit of 16th plenary session and practicing the important thought of "Three Represents".