Udcs
abbr. Universal Decimal Classfication (图书、资料等的)国际十进分类法
🗣️ 情景例句
How long will this be on sale?
这种商品减价时间有多久？
Danger is next neighbour to security.
危险是安全的近邻。
But the chances are against it,
但这种可能性很小。