n.[C]

1. 车辙；槽；凹痕
   The detective followed the rut made by the jeep.

   侦探追寻着吉普留下的车辙痕迹。

2. 常规，惯例，定例，老规矩
   When you feel stuck in a rut, it is time for you to upgrade your skills.

   感觉自己停滞不前的时候就是应该技术更新的时候。

   fall into a conversational rut

   陷入老生常谈

vt.

1. 在……形成车辙；在……挖槽
   The heavy-duty trucks were rutting the road.

   重型卡车在公路上留下车辙。

n.

1. （雄鹿、雄羊等的）发情[U]
2. 发情期[the S]
   During the rut, the male deer can be very irritable.

   在发情期间，公鹿可能很易怒。

   be in the rut

   在动情期

vi.

1. （雄鹿，雄羊等的）发情，动情
   Environment can sometimes alter the rutting age of an animal.

   有时环境可以改变动物发情的年龄。

n.

1. a long deep track made by the repeated passage of the wheels of vehicles.
2. a routine or pattern of behaviour that has become dull and unproductive but is hard to change.

n.

v.