Mellitic acid
[化] 苯六酸; 苯六羧酸\\n[醫(yī)] 苯六羧酸
?? 詞語組成解析
??? 情景例句
my grandfather is
我爺爺
I am 60 years old and siingle.
我六十歲了，仍然單身。
Then he remembered his comrade downstairs.
然后他想起樓下的同志。