Diprotic
双质子的
🗣️ 情景例句
But I promise you, Alexandra,
但是我向你保证，Alexandra，
In fifty years there'll be twenty people per square yard, it is written here.
这里写着，再过五十年每平方码将要住着20人的人口密度。
How long will it take you to complete the trip?
你旅行全程需要多长时间？