这个化学成分太强,我不喜欢呀。
所有跟帖:
• Both base and acid are natural. -career- ♂ (233 bytes) () 03/22/2017 postreply 17:38:57
• 没学过化学。 -作人要厚道- ♀ (0 bytes) () 03/22/2017 postreply 17:58:58
• It's middle-school chem. -career- ♂ (0 bytes) () 03/22/2017 postreply 18:52:14