Phenylnaphthalene
苯基萘
??? 情景例句
How is everyone in your family?
全家都好嗎？
What number should I dial to get the operator?
我應該撥什么號碼找到接線員？
Though a number of descents have been made, much of it still remains to be explored.
人們多次進入洞內探險，但至今尚有不少東西有待勘探。