When electrons collide with the foil, positrons are formed in the flow.

当电子与金属箔相，电子在流动中形成。

I am, and I am decorating my Christmas tree with tinsel, bells and baubles.

是的，我在用金属箔、铃铛和小玩意装饰我的圣诞树。

But the name also suggests a falseness. Tinsel is not really a high quality metal, of course.

但是这个名字也有点瑕疵。" 金属箔" 当然是很高质的金属。

A laser beam passing through a jet of helium forms a stream of electrons, and a thin metal foil blocks their way.

激光束通过氦射流形成电子流，一层薄金属箔挡住了它的去路。

Fathers may help their sons construct a costume of foil armor.

父亲可能会帮助的儿子制作一套金属箔盔甲。

THIS CAUSES AN OPPOSITE CHARGE TO FORM ON A BAND OF METAL FOIL ON THE OUTSIDE OF THE JAR.

这会导致在罐子外面的金属箔带上形成相反的电荷。

THE CHARGE IS CARRIED DOWN INTO THE JAR THROUGH A ROD AND WIRES TO THE WATER AND METAL FOIL INSIDE.

电荷通过一根杆和电线被带到罐子里， 连接到罐子里的水和金属箔。

They found that the biggest triggers were whispering, personal attention, and crisp sounds like the rapping of metallic foil and the tapping of long fingernails.

发现， 最大的诱因是窃窃私语、个人关注和清脆的声音，比如金属箔的敲击声和长指甲的敲击声。