尽管在组装阶段使用 RAD 是一种很常见的做法，但很多 IT 企业仅在使用遗留系统方面非常专业。
Although using RAD during the assembly phase is a fairly common practice, many IT businesses are very specialized with only legacy systems.
把衣服挂在大街上的做法在城市的很多地方都很常见。
The practice of hanging clothes across the street is a common sight in many parts of the city.
在中国，给客人倒茶是一种常见的做法。
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