This line also traps for a null value and converts it to an empty string to prevent problems during later processing.

这一行代码也会专门处理null值，它将null值转换为一个空字符串以避免后面的处理出现问题。

youdao

Series G, MG Float & Thermostatic Steam Traps are designed for use on modulating process equipment and as main distribution line drip traps.

系列G， MG浮子恒温疏水阀专用于调节工艺加工设备和作为主配水管道滴水阀。

youdao

In the middle, Ryan starts pulling up his first line of lobster traps for the day.

VOA: standard.2010.07.20