英语语法分析

They used waterproof cement to prevent water from seeping through the roof of the runnel.

他们用防水水泥来防止水从 屋顶的 排水通道里渗透。

They used waterproof cement to prevent water from seeping through the roof of the runnel .

他们使用防雨水泥以防止雨水从屋顶的排水渠里渗透出来。

Before we came to southern Appalachia, we lived for years in Arizona, where a permanent runnel of that size would merit a nature preserve.

在来到阿帕拉契亚东部之前，我们一家在亚利桑那州呆了很多年，那里有一条和这条小溪差不多大小的永久性流河，在我看来应当将这条河划分为自然保护区。