Correct or improve the translation of the following English sentences.原文：The road followed the course of the Nile, now passing through the fields, now drawing a black line separating them from the desert. 译文：公路是顺着尼罗河修筑的，现在穿过庄稼地，现在像是划的一条黑线，这边是庄

Correct or improve the translation of the following English sentences.原文：The road followed the course of the Nile, now passing through the fields, now drawing a black line separating them from the desert. 译文：公路是顺着尼罗河修筑的，现在穿过庄稼地，现在像是划的一条黑线，这边是庄稼，那边是沙漠。改译：

公路是顺着尼罗河修筑的，有时穿过庄稼地，有时像是划的一条黑线，这边是庄稼，那边是沙漠。