这个失败说，我没有用长度为零的数组测试该代码。

This failure says that I haven't tested the code using a zero-length array. That's easy enough to fix, so I can just add a quick test and move on to the next failure, shown in Listing 4.

youdao

这对于灌溉是有用的，但是旱季的高温、低湿度和不同于正常生长季节的白昼长度，会给一些作物的生长带来困难。

This is useful for irrigation, but the high temperatures, low humidities, and different day lengths of the dry season, compared to the normal growing season, can present difficulties with some crops.

youdao

这就使得它们成为很有用的工具测量宇宙的长度。

This makes them very useful as a tool to measure cosmic distances.

youdao