With free edges, preferably with black pigmentation.

具有自由边的最好，黑色色素沉着。

youdao

They can only do I get confused with just a clear, do not want to change themselves and do not want to be ground into the stone-free edges and corners.

可我二人也只是这样清醒得糊涂着罢了，并不想改变自我，并不想被磨成无棱角的鹅卵石。

youdao

The analysis of the thick rectangular plates with free edges on elastic foundations has been a topic of interest for a number of researchers for many years.

弹性地基上厚板的分析多年来是研究者感兴趣的一个问题，但是对于四边自由的问题却至今没有解决。

youdao

The pieces have free-flowing edges, dovetail joinery, inlaid butterfly-shaped bridges of contrasting wood that stop natural cracks from spreading and at least four coats of a hand-rubbed oil finish.

FORBES: Trees with souls