Kallidinogen
胰激肽原
??? 情景例句
Well, what do you want to do?
那你想干什么？
Scratch a Russsian, and you('ll) find a Tartar.
文明不能改變本性。
small at first, narrowly contained within its banks,
開始很小，被緊緊地夾在兩岸中間，