Pentacite
季戊(四醇)醇酸樹脂
??? 情景例句
I've never seen you so wound up.
我從來沒有看過你這么緊張。
Accidents will happen in the best regulated families.
即使家規嚴，丑事總難免。
Knowledge began to increase as soon as the thoughts of one individual could be communicated to another by means of speech.
人一旦能用語言同別人交流思想，知識的積累便開始了。