田间的犁沟里整齐地播下了玉米种子。

Corn seeds were planted neatly in the ___furrows of the field.

他思考时，眉头间出现了一条深深的皱纹。

A deep ___furrow appeared between his brows as he pondered.

老人用粗糙的手在泥土上犁出深深的沟壑。

The old man ___furrowed the soil with his rough hands.