如果班上的人数多，老师就不能给予个别辅导了。 A teacher can't give individual attention to each pupil if his class is large.
微调装置精密仪器上被设计用以增进精密校准或测量的一个辅助装置 An auxiliary device designed to facilitate fine adjustments or measurements on precision instruments.
机械系统用来工作的系统或装置，如汽车或手持式凿岩机，包括其动力源和辅助设备 A system or device for doing work, as an automobile or a jackhammer, together with its power source and auxiliary equipment.
他援引教授物理学方面的一些运动定律为例，说明当计算机用于辅助教学时，学生在幼年就能够理解这些定律。 He cites as an example the teaching of the laws of motion in physics, which he says are accessible at an early age when a computer is used to assist in the instruction.
