You should keep a first-aid kit in your home just in case there is an accident.

你应该在家里放一个急救箱，以防发生事故。

youdao

In case of an accident, bicycle riders should know how to give first aid.

万一发生事故，自行车骑行者应该知道怎样进行急救。

youdao

Years earlier he'd rushed to the aid of a young, critically injured man at another highway accident.

几年前，他曾火速前去帮助在另一条高速路事故中受伤严重的年轻人。

youdao

The NTSB said Wednesday it has accepted an invitation from the French aviation accident investigation authority, the Bureau d'Enquetes et d'Analyses, to aid in the investigation.

CNN: Brazilian air force says debris was not from Air France crash