C1 如果…发生；万一
if something happens
In the event of a strike, the army will take over responsibility for firefighting. 如果发生罢工，部队将承担起消防职责。
We need to work out how we would communicate in the event of a large-scale disaster.
In the event of an emergency, oxygen masks will drop from the ceiling of the aircraft.
There would be an increase in the demand for vaccines in the event of a flu pandemic.
Many people would be prepared to offer financial support in the event of a legal battle.
See also: event