I saw the gleam of the knife as it flashed through the air.

我看见了刀在空中划过时的闪光。

《牛津词典》

They saw the small hand come out of the earth, and the little child take from it the knife.

他们看见了土中伸出一只小手，小孩从这只手中接过了刀。

youdao

One day he saw a knife sharpener.

一天他看到一个磨刀器。

youdao

The chisel is a knife designed to be struck with a mallet, while the saw is a knife shaped with a row of mini-blades.

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Once cooked all the way around (after about five minutes), use a sharp or serrated knife to saw the kernels off the cob.

WSJ: Josh Habiger and Erik Anderson's Elote Corn Salad With Piment��n-Mayo | Slow Food Fast

Others find frightening parallels to Hase's death (he was beheaded with a knife and saw) in the violent video games and comic books that are readily available to children and adults.

CNN: NEWSMAKERS