发动 + (了) + Object
发动 (fādòng) is a verb meaning "to start" or "to launch," often used for starting engines or initiating campaigns. It implies setting something into motion. For example, 发动了车子 means "started the car."
他发动汽车,准备出发。
Tā fādòng qìchē, zhǔnbèi chūfā.
He started the car and got ready to set off.
花了好几次才把车发动起来。
Huā le hǎo jǐ cì cái bǎ chē fādòng qǐlái.
It took several tries to get the car started.
早上太冷了,车子很难发动。
Zǎoshang tài lěng le, chēzi hěn nán fādòng.
It was too cold this morning; the car was hard to start.