Xylylenediamine
[醫(yī)] 二甲苯二胺
??? 情景例句
and lay them face down.
將牌蓋住。
Do you often doubt yourself?
你時常懷疑自己嗎？
have no chance of transporting us to the nearest other star, four light years away,
但尚不可能把我們送到離我們最近、相距4光年的其他星球上去，