and yet children learn it so easily with minimal effort at all.而孩子們卻能夠輕而易舉地掌握

at all完全； 根本

I assure you that you will feel no pain at all.

我保證你根本不會覺得疼的。

I don't think that's a bad idea at all.

我看這完全不是個壞主意。

how we learn to talk remains a mystery.我們如何學會講話依舊是個未解之謎

learn to學習

I must learn to snatch at every chance to meet him.

我必須學會抓住一切機會同他見面。

A mountaineer must learn to stand the gaff.

一個登山運動員必須學會吃苦。

what makes us human and where language comes from.以及語言來自何處，我們幾乎一無所知

come from來自； 起源于

We heard clink come from that room.

我們聽到那個屋子傳來叮當聲。

He come from holland, but she come from Sweden.

他是荷蘭來的，但她是瑞典來的。