本文确定了一棵树与一个k -连通偏k -树的乘积图的树宽。其中，偏k -树是一个树宽为k的图。

We determine in this paper the treewidth of the product of a tree and a k-connected partial k-tree, where a partial k-tree is a graph with treewidth k.

youdao

她及时跑了出去，看到半英里宽的泥沙从山上轰隆隆地向他们冲来，撞翻了几百棵树。

She rushed outside in time to see a half-mile wide mud and sand thundering down the hill toward them, knocking over hundreds of trees.

youdao

三个星期以来我第一次独自开车从温得赫克驶往纳米布沙漠。蔚蓝的天空笼罩着大地，无树草原在蓝天下产生一种地面又平又宽的假象。

For the first time in three weeks I am alone, driving from Windhoek toward the Namib Desert beneath a ubiquitous blue sky, its presence above the savannah creating the illusion of a flat, wide Earth.

youdao