Hydroxytyramine,dopamine
[化] 3,4-二羥基-β-苯基乙胺
??? 情景例句
have been busy at work this morning
一早上都在忙著
Two blacks do not make a white.
兩個烏黑不等于一個清白。
To be honest with you，I'm twenty.
老實說，我20歲。