China's first home-built aircraft carrier hit the water in Dalian on the morning of April 26, 2017.

2017年4月26日上午，中国第一艘国产航母在大连下水。

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Keegan Cooke, a former microbial fuel cell researcher, has been selling a home-built battery called a MudWatt kit.

基冈·库克曾经研究过生物燃料电池，他一直在卖一种称作MudWatt的家庭自制电池组。

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They built a temporary home out of zincs.

他们用瓦楞铁板搭建了一个临时住所。

《牛津词典》

In Utah, a grad student from the University of Denver shattered a world speed record by hitting 216 MPH on a home-built electric motorcycle.

ENGADGET: Inhabitat's Week in Green: GPS shoes, shape-shifting bicycle and a wheelchair helicopter

While Lee's remarkable home -- built from a pre-fabricated timbre frame of frost-hardy Siberian larch -- has won numerous architectural awards, that's not the only reason it has drawn a crowd.

CNN: Thousands flock to London's Open House festival

Last September when Apple ditched its Google Maps iPhone app and replaced it with its amazingly inept home-built Maps app, the move was so roundly denounced as a step backward and a weakening of the iPhone environment that chief executive Tim Cook had to release a public apology.

FORBES: Is Google's New Maps App Actually a Big Triumph for Apple?