1.This we can do by means of a marvelous invention called an air trough which gets rid of friction.
我们可以利用一个称为气垫的惊人的发明来做实验，它能摆脱摩擦力。
2.This is not some marvelous invention - it is a simple, imposed limitation on the input field.
这算不上重大发明，只是对输入方面施加了限制。
3.What a marvelous invention the sewing-machine was!
缝纫机是个多么了不起的发明啊！