n. 清洁剂;保洁员;吸尘器;干洗店;
adj. 更清洁的(clean的比较级);整齐的;新的;正派的;
clean 清净+ er表人\/物 →清洁工;干洗店;干洗商;洗洁器
🗣️ 情景例句
Smokers pollute the air.
吸烟污染空气。
This alone made our nine-day trip worthwhile.
光这件事我们九天的旅行就非常值得。
Why does the idea of progress loom so large in the modern world? Surely progress of a particular kind is actually taking place around us and is becoming more and more manifest.