/trɒf; [US] trɔ:f; trɔf/
1 long narrow open box for animals to feed or drink from 饲料槽; 饮水槽. =>illus at pig 见 pig 插图.
2 shallow channel that allows water, etc to drain away 排水沟.
3 low area between two waves or ridges 波谷; 低谷. =>illus at surf 见 surf 插图.
4 (in meteorology) long narrow region of low atmospheric pressure between two regions of higher pressure （气象）低压槽. Cf 参看 ridge 3.
1【container】2【low point】3【waves】4【weather】5 have your nose/snout in the trough
[Language: Old English;Origin:
a long narrow open container that holds water or food for animals a horse trough【LOW POINT】
a short period of low activity, low prices etc
≠ peaktrough of The graph showed peaks and troughs of activity.【WAVES】
the hollow area between two waves【WEATHER】technical
a long area of fairly low pressure between two areas of high pressurehave your nose/snout in the troughBrE
if people have their noses in the trough, they are involved in something which they hope will get them a lot of money or political power - used to show disapproval
1. A trough (the lowest point), a height (the vertical distance from the trough to the crest), 波谷（最低点）、浪高（从波谷到浪峰的垂直距离）、