Vinylamine
乙撐亞胺; 乙烯胺; 二甲亞胺
??? 情景例句
I always worry.
我一向擔(dān)心。
Delivery costs will have to be borne by the manufacturer, I'm afraid.
運(yùn)費(fèi)恐怕要由制造廠商來(lái)承擔(dān)。
There is no sky in June so blue that it does not point forward to a bluer,
六月蔚藍(lán)的天空總使人遙想一個(gè)更加蔚藍(lán)的蒼穹；