名 channel，ditch，groove，rut，chimb ；

[例句] 他熟练地左一拐右一拐地绕过深沟，穿过了原野。 Expertly he zigzagged his way across the field, avoiding the deeper gullies.

[例句] 在深约0.5英寸，间隔12英寸的条播沟里播种。 Sow the seeds in drills about 1/2in. deep and 12in. apart.