记忆方法
将“cleaner”记忆为“clean”+“er”。想象一个“er”加在“clean”上，表示某物或者某人比“clean”（清洁的）更进一步，即“清洁工人”或者“清洁剂”，这样就能记住“cleaner”这个单词的意思了。
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英语词源
- cleaner (n.)
- mid-15c., agent noun from clean (v.). Meaning "shop that cleans clothes" is from 1873. To take (someone) to the cleaners "get all of (someone's) money" is from 1921.
权威例句
- 1. The Marshal stepped over the vacuum-cleaner and stumped out of the room.
- 元帅迈过真空吸尘器，脚步沉重地走出了房间。
- 2. He could hear the whirr of a vacuum cleaner.
- 他能听到真空吸尘器的嗡嗡声。
- 3. The Auto Compact Disc Cleaner can run off batteries or mains.
- 这种光盘自动清洗机可用电池或电源两种方式驱动。
- 4. Nuclear power is cleaner than coal.
- 核能比煤清洁。
- 5. He was a window cleaner.
- 他是个洗窗工。