Nitrourea
硝基脲
🗣️ 情景例句
I visited Japan on an observation tour of its industries.
我到日本观摩它的工业。
Well begun is half done.
良好开端，功成一半。
The village seemed deserted, the only sign of life being an ugly-looking black goat on a short length of rope tied to a tree in a field nearby.
村里似乎无人居住，唯一的生命迹象是附近田里一只面目可憎的黑山羊，用一截短绳拴在一棵树上。