他把手伸到书柜的第三层，取下一本词典。

He reached up to the third shelf of the bookcase and took down a dictionary.

youdao

书柜分三层，我把最厚的书放在最上层。

The bookcase has three layers. I put the thickest books on the upper layer.

youdao

书柜分三层，我把最厚的书放在最上层。

The bookcase has three layers. I put the thickest books on the upper layer.

youdao