Perhaps I am just a duckbill .

或许我只是只鸭嘴兽.

Duckbill check valve is the replacement of traditional flap valve .

鸭嘴止回阀是传统拍门的替代品.

Later , the fact that he was wrong made him have to ask the duckbill to forgive his arrogance .

后来，事实使恩格斯“不得不请求鸭嘴兽原谅自己的傲慢与无知”。

Many lovable beautiful woman of sex appeal teacher - liao diseases - duckbill .

性感可爱的美女老师－廖多症－鸭嘴兽。

Also called duckbill semi aquatic egg-laying mammal native to tasmania and southern and eastern australia .

鸭嘴兽是半水栖卵生哺乳动物,原产于塔斯马尼亚岛和澳洲的南部及东部。