我很熟悉这片土地，就像熟悉我的手背一样。

I know the area like the back of my hand.

youdao

我沉浸在思想中，直到脖子发酸，我才低下头来，一行清泪滴落在我的手背上。

I immersed in thought, until the neck sour, I only bowed his head, and his party Qinglei dripping on my back of the hand.

youdao

伸开你的手，确保你的手掌和我的手掌贴在一起，然后把你的大拇指扣在我的手背上，同时用其他手指轻轻地握紧我的手，很快地上下摇动两下后就松手。

Extend your hand, make sure the web of your hand makes contact with the web of my hand, close your thumb over the back of his hand; give a slight squeeze with your fingers; two quick pumps and let go.

youdao