He was an inventor himself: he invented a moldboard for plows, a swivel chair, a pedometer, a camp stool, and a copying device, among other things.
他是个发明家，他发明了一种耕地的犁、转椅、计步器、马扎、复印设备和其他东西。
The garden chair unfolds to make a camp-bed .
花园中的椅子打开可以当行军床用…
The garden chair unfolds to make a camp-bed.
花园中这把椅子可以打开当行军床用。
He knocked the boards together to make a camp chair.
他把木板拼凑成一把轻便折椅。
He knocked the boards together to make a camp chair.
他把木板拼凑成一把轻便折椅。
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