at a good clip
The New York Timesにあった記事から英語表現を拾います。
With a Jolt From Tesla, a More Electrifying Utility
THE top speed of a vehicle usually doesn’t mean much — until, that is, you’re running late for a flight, as I was in Los Angeles a few Saturdays ago.
I punched the Sport button on the all-electric Toyota RAV4 EV that I had been driving for two days and slammed the accelerator to the floor. The burst of power — in a blink it kicked me past the 75 m.p.h. traffic in the fast lanes — was not what I expected from a small battery-powered crossover.
The electric surge was transformational. Still gaining speed at a good clip, I could easily have zoomed to the 100 m.p.h. top speed listed in Toyota’s specifications. (For the record, the top speed in Normal mode is 85.)
今回採り上げるのはclipという単語。clipというと「切ること, 刈り込み」という意味が想起されますが，その他に「（すごい）スピード」という意味があります（『プログレッシブ英和中辞典』小学館）。同辞書には，用例としてat a（brisk ［fast, good, rapid］）clip［＝at one clip］（一気に, 急速に）が挙げられています。今回のStill gaining speed at a good clipは「急加速しながらも」と解釈できます。（Koyamamoto）
