Electrodepositing
電解沉積
??? 情景例句
a portrait of the United States--
一幅美國的剪影--
I would like to ask you a question.
我想問你一個問題。
later, we shall undergo a progressive loss of our vigour and resistance which, though imperceptible at first,
再遲一些，我們就要經歷生命力和抵抗力逐步衰退的過程。雖然這個過程起初難以覺察，