1. The worker detached a gear from the machine.
    工人从机器上拆下了一个齿轮。

2. Shocked awake by the sound, he would immediately sketch the images seen in his mind in that fertile world of semi-sleep.
    响声就会将他惊醒，他便立刻把在那个似睡非睡时的丰富世界里在脑海中所浮现出来的众多形象绘成草图。