if —— happens
如果发生…；万一
this will reduce the chance of serious injury in the event of an accident.
如果发生意外事故，这会减少重伤的可能性。
if; should it happen that
假若；倘若
in the event that an attack is launched, the defenders will have been significantly weakened by air attacks.
如果发动攻击，空中打击将使防卫者的防卫能力大大减弱。
if that happens
如果是那样的话；在那种情况下
in that event, the US would incline toward a lifting of the arms embargo.
在那种情况下，美国可能会取消武器禁运。
In any case.
在任何情况下，不管怎样
In any case.
在任何情况下，不管怎样
If it should happen; in case.
如果发生；万一发生