注文が次々に入り、応接にいとまがない。
Orders keep coming in one after another, and we can hardly keep up.
車窓の景色が刻々と変わり、応接にいとまがないほどだった。
The scenery outside the train window changed so quickly that I could hardly take it all in.
押し寄せる難題に応接するだけで精一杯だった。
Dealing with the flood of difficult problems was all I could manage.