Blackening so also is not open-eyed .

所以变黑也是不惊讶.

A disease blackening the leaves of pear and apple trees .

使梨树或苹果树叶子发黑的一种病。

In the spring fire swept across the hills , blackening them .

今春的一场大火横扫了这些山，变成了黑色。

Blackening is outside the firewall matter how ?

防火墙外侧发黑是怎么回事？

The solid decomposed rapidly with blackening .

固体迅速分解并变暗。