Dihydroxy tetrabasic acid
[化] 二羥四價酸; 二羥四堿價酸
?? 詞語組成解析
a. [化]四代的, 四元的, 四堿的
??? 情景例句
Men and women, young and old, to give us their time.
不管男女老幼 ，請他們貢獻時間。
Do you have any toys?
你有玩具嗎？
In the afternoon, she usually sees her friends.They often drink tea together.
下午，她總是會見她的朋友。她們經常在一起喝茶。