Plastacele
粉状醋酸纤维素
🗣️ 情景例句
Do you really think so?
你真的这么想吗？
If you hadn't slipped and fallen,you wouldn't have broken your leg.
如果你没滑倒,你就不会断腿了。
I'm not sure that this conference is as good as last year's.
我确信这次会议不如去年的会议精彩。