Simple machine
n. 简单机械
📖 牛津释义
simple machine
any simple instrument used as (part of) a machine, eg a wheel, lever, pulley 简单机械（如轮、 杠杆、 滑轮）.
🧩 词语组成解析
🗣️ 情景例句
I believe my English fluency is quite good.
我认为自己的英语相当的流利。
Oh, thank you.
噢，谢谢了。
Some years ago an American psychiatrist named William Dement published experiments dealing with the recording of eye-movements during sleep.
前些年，美国一位精神病学者发表了一篇报告，报告中记录了眼球在睡眠时的活动情况。