*expand:延長する

substitute :　代理

文脈の中で、単語を覚えよう。

Ai Drivers' business hours are 7 p.m. to 4:30 a.m. Many drivers, including Nakajima, who owns a used-car business, have day jobs. "I started Ai Drivers' Kasukabe franchise this September to expand my business," Nakajima said.

Ai Drivers recently received an increase in applications from prospective franchisees. One applicant, Toshiyuki Suzuki, 24, visited Ai Drivers' headquarters on a recent Saturday night for his second interview.

"I've always wanted to start my own business. Seeing the flashy Ai Drivers' vehicle in town got me interested in the substitute driving enterprise," he said. "Drunken driving cases have been in the news a lot lately. I thought I could encourage law-abiding behavior with this job and be proud of what I do."