拖拉机在田里犁出了一排排整齐的沟壑用于播种玉米。

The tractor plowed neat ___furrows in the field for planting corn.

她深锁的眉头间有几道明显的皱纹。

There were noticeable ___furrows between her tightly knit brows.

老人皱起眉头，脸上布满了岁月的痕迹。

The old man ___furrowed his brow, his face marked by years of hardship.