阻力 (zǔlì) is a noun meaning "resistance," "drag," or "obstruction." It can refer to physical resistance such as air resistance in physics, or figurative resistance such as opposition to a plan or policy. It combines 阻 (to hinder) with 力 (force).
这项改革遇到了很大的阻力。
Zhè xiàng gǎigé yùdào le hěn dà de zǔlì.
This reform has encountered great resistance.
空气阻力会影响汽车的行驶速度。
Kōngqì zǔlì huì yǐngxiǎng qìchē de xíngshǐ sùdù.
Air resistance affects the driving speed of a car.
尽管面临不少阻力,他还是坚持推进了计划。
Jǐnguǎn miànlín bù shǎo zǔlì, tā háishi jiānchí tuījìn le jìhuà.
Despite facing considerable resistance, he still pushed the plan forward.