The ointment stops the hair from falling out.

这药膏可以防止脱发。

youdao

Neighbors saw what was happening, but were unable to prevent the toddler from falling out.

邻居们目睹了妞妞的情况，却无力阻止。

youdao

This gives the seat a bit of lateral support and prevents the rider from falling out during high g's.

这使座椅支撑位外侧，防止了在车手掉下高g的。

youdao

The volunteers placed the plants about five centimeters into the soil to prevent rising and falling water levels from pulling them out.

VOA: special.2009.10.06

Railway trains roared through, and Bip, bouncing and swaying in his seat, struggled to keep his suitcase from falling out of the rack.

ECONOMIST: Bip

You see, there has always been a tension between the desire to allow markets to function without interference and the absolute necessity of rules to prevent markets from falling out of kilter.

WHITEHOUSE: President Obama Tells Wall Street to Back Reform

He dropped out of international contention in 1994 and suffered from a high-profile falling out with Bertie Vogts, but forced his way back at the age of 37 with a series of impressive performances for Bayern.

BBC: World record awaits Matthaus