This grimalkin has a very ugly look.

个 grimalkin 有个非常丑陋的样子。

It is the visage of grimalkin, outside of the window, where he appears to have posted himself for a deliberate watch.

窗外的格里马尔金人的面容， 他似乎已经把己张贴在那里行有意的观察。

Immediately on her entering the garden gate, the family of hens half ran, half flew to meet her; while a strange grimalkin, which was prowling under the parlor window, took to his heels, clambered hastily over the fence, and vanished.

她门，群母鸡半跑半飞地迎了上来；只在客厅窗户底徘徊的奇怪的侏儒兽也跟了上去，急忙翻过篱笆，消失了。