She constantly trembles and the left side of her face sags.

His hands had liver spots on the back, and they trembled constantly.

Regis in particular was starting to look worse for wear, and was constantly trembling, his teeth chattering.

They trembled constantly, and they had almost no feeling in them.

When he tried to stand up, I noticed to my horror that his hands and legs were constantly trembling.

He trembles almost constantly, does not stand without assistance and seems unable to take even a short step on his own.

It was no wonder, then, that he trembled constantly when he was in her presence.

His general bearing looked healthy enough, but his webbed hands trembled constantly.

His hand trembled constantly, and he had trouble speaking.

The tail is constantly trembling, so the animal is sometimes called the "flickertail".