It took 10 years, and then within a couple of months, it was such a hit they just introduced it and rolled it across the entire system of McDonald's in the country.
花了十年时间， 然后在短短几个月之内， 他们就推出了麦乐鸡块， 并在全国麦当劳连锁的整个系统中都推广了， 可真是风行一时。