Definition
to protect against or keep at bay an unwanted person or thing from affecting or nearing you
防止；擋住；避免
She drew some symbols on the door to ward off evil spirits.
她在門上畫了一些符號來驅趕邪靈。
He used perfume to ward off those pesky mosquitoes.
他用了香水來驅趕那些討厭的蚊子。
To ward off their criticism, she prepared some explanations in advance.
為了擋住他們的批評，她提前準備了一些解釋。