trench

1. N-COUNT A trench is a long narrow channel that is cut into the ground, for example, in order to lay pipes or get rid of water. 沟渠

2. N-COUNT A trench is a long narrow channel in the ground used by soldiers in order to protect themselves from the enemy. People often refer to the battlegrounds of the First World War in Northern France and Belgium as the trenches. 战壕

We fought with them in the trenches. 我们在战壕里与他们作战。