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running fast; double time
cantering
doing things in a hurry
時間がないので駆け足で説明させていただく。
Since we're short on time, I'll have to get through the explanation quickly.
駆け足で説明を終えました。
I finished the explanation hurriedly.
梅雨が駆け足で過ぎ去りました。
The rainy season passed quickly.