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粘膠纖維素
??? 情景例句
I understand Richard's feelings about it, Ellen.
我了解Richard對此的感受， Ellen。
I'd be glad to help.
我樂意幫忙。
Arthur C.Clark once suggested a revolutionary idea passes through three phases:
Arthur C.Clark曾經提出，一個革命性的想法經過三個階段：