Descaling
除銹
??? 情景例句
What did you mean by well ...?
你說 嗯…… 的意思是什么？
Can you guess what I was doing this morning?
你能猜測我今早正在做什么嗎？
He owes his wealth to diligence and good luck.
他的財富是由于他的勤勞和幸運。