zài / ruǎn / jiàn / gōng / chéng / zhōng / , / zì / dǐ / xiàng / shàng / de / shè / jì / fāng / fǎ / fēi / cháng / cháng / yòng

在软件工程中，自底向上的设计方法非常常用。

In software engineering, the bottom-up design method is very commonly used.