Definition
to avert or intercept a challenging or undesirable situation from occurring.
防止；預防
She stepped in quickly to head off the situation before it got out of control.
她迅速介入，在情況失控之前將其阻止。
When he noticed a potential problem, he took immediate action to head it off.
當他注意到潛在的問題時，他立即採取行動來阻止它。
The managers are working to adjust the budget to head off any potential economic crisis.
經理們正在努力調整預算，以防止任何潛在的經濟危機。