求翻译：The field preparation was similar to that of conventional nursery raising and was ploughed thrice by Bose plough and leveled by planking.是什么意思？

待解决

悬赏分：1 - 离问题结束还有

The field preparation was similar to that of conventional nursery raising and was ploughed thrice by Bose plough and leveled by planking.

问题补充：

匿名	2013-05-23 12:21:38 现场准备是类似的常规育苗提高，是百色犁耕三次木板拉平。

匿名	2013-05-23 12:23:18 该领域编制类似,常规武器的托儿所,是用於三百色的犁和夷铺板的。

匿名	2013-05-23 12:24:58 领域准备于那是相似的常规托儿所上升和由Bose耕犁耕三倍并且由铺板成水平。

匿名	2013-05-23 12:26:38 字段编写类似于常规育苗提高和三次的玻色犁犁，并调配的板。

匿名	2013-05-23 12:28:18 领域准备类似于传统的托儿所的提高并且被博斯犁三次犁并且被通过铺以厚板使成水平。

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