an ingenious inventor

灵巧的发明家。

My brother was not strong at books, but very ingenious in building machines.

我弟弟不善读书，但善于制造机器。

A speedometer is an ingenious device.

速度计是一种精巧的机件。

Digital watches are ingenious devices.

数字型的表是精巧的发明。

Children are more ingenuous than adults.

小孩比成人纯真。