It has a built-in electric motor which can open or close the umbrella on demand.

它有一个可以根据需要开合雨伞的内置电动马达。

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It is usually agreed that a German, Carl Benz, built the first motor car in 1885.

人们通常认为德国人卡尔·本茨在1885年制造了第一辆汽车。

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It is usually agreed that a German, Karl Benz, built the first motor car in 1885.

人们通常认为是德国人卡尔·本茨在1885年制造了第一辆汽车。

youdao

Dr Baker reckons that costs can be cut if the launch rocket uses the satellite's guidance computer instead of having its own, and if the satellite's built-in rocket motor is bolstered to do the work now performed by a launch rocket's upper stage.

ECONOMIST: Space

The Batmobile design was based on a 1955 Lincoln Futura, a concept car built in Italy by the Ford Motor Company.

BBC: Original Batmobile sold for $4.2m at US auction

The world's smallest synthetic motor was created by Alex Zettl, professor of physics at University of California, Berkeley in 2003 while the first nano car (without a motor) was built by James Tour in 2005.

CNN: World's smallest car fuels nanotech advance