not dirty
Please keep the floor clean.
請保持地板清潔。
neat and tidy
Cats keep themselves clean.
貓會保持自己整潔。
safe for the environment
Solar power is a clean energy source.
太陽能是一種清潔能源。
blank
Use a clean piece of paper.
用一張空白的紙。
appropriate for all ages
Tell clean jokes only.
只講適合所有年齡的笑話。
no law violations
He has a clean record.
他沒有違法記錄。
free of illegal items
The search showed he was clean.
搜查顯示他沒有違禁品。
sober
She has been clean for months.
她已經清醒幾個月了。
fair
It was a clean match.
這是一場公平的比賽。
smooth and even
Make a clean cut with the knife.
用刀切得平整。
skillful
The pilot made a clean landing.
飛行員熟練地著陸了。
error-free
She writes clean reports.
她寫的報告沒有錯誤。
fresh and pleasant
The soap has a clean scent.
這塊肥皂有清新的香味。
to make something not dirty
Clean your shoes before entering.
進屋前把鞋弄乾淨。
to become not dirty
This table cleans easily.
這張桌子容易清潔。
to dry clean
I will clean this suit at the shop.
我會在店裡乾洗這套西裝。
to prepare food by removing insides
Clean the fish before cooking.
烹飪前把魚清理乾淨。
completely
I clean forgot to call.
我完全忘了打電話。
the act of cleaning
The car needs a good clean.
這輛車需要好好清洗。