1
a washout
常用于口语，表示完全失败。
The party was a washout.
派对彻底失败了。
冲刷；冲蚀
先理解核心含义，再看它在真实句子里的用法。
冲刷；冲蚀
the erosive process of washing away soil or gravel by water
The party was a washout.
派对彻底失败了。
清洗或清洁内部
An act of washing or cleaning the inside of something.
用于清洗内部的装置。
An appliance designed to wash out the inside of something.
水流冲刷软表面；由此产生的沟渠
The erosion of a relatively soft surface by a sudden gush of water; also, a channel produced by this action.
飞机机翼形状的小扭曲所产生的空气动力效应。
The aerodynamic effect of a small twist in the shape of an aircraft wing.
The storm caused a washout on the mountain trail, so hikers had to turn back.
暴风雨在山间小道上造成了冲刷缺口，徒步者只好折返。
Farmers checked the field for washouts after the spring rains.
春雨后，农民们检查田地里是否有冲蚀沟。
The washout in the dirt road was deep enough to damage a car's axle.
土路上的冲蚀坑很深，足以损坏汽车的车轴。
常用于口语，表示完全失败。
The party was a washout.
派对彻底失败了。
指雨水冲刷造成的侵蚀过程。
The washout of the road was caused by heavy rain.
道路的冲蚀是由暴雨造成的。
指被水冲出的沟壑或缺口。
The trail was blocked by a washout.
小径被一道冲沟堵住了。
Not this
The heavy rain washout the soil.
Use this
The heavy rain caused a washout of the soil.
washout是名词，不能直接作动词。表达'冲蚀'时需要用caused a washout或动词短语wash out。
Not this
After the storm, there were several washout.
Use this
After the storm, there were several washouts.
washout是可数名词，复数形式为washouts，需加-s。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
道路被水冲毁；路面冲蚀
The flood caused a road washout near the bridge.
洪水导致桥附近的一段路被冲毁。
洗脱期；药物清除期
Researchers required a seven-day washout period between treatments.
研究人员要求两次治疗之间需经过七天的洗脱期。
冲洗阀；清洗阀
Open the washout valve to let the dirty water out.
打开冲洗阀，把脏水放出来。
机翼扭转（翼尖安装角小于翼根，可防失速）
Wing washout improves stability during slow flight.
机翼扭转可提高慢速飞行时的稳定性。
大气冲刷清除；降雨清除作用
Atmospheric washout removes pollutants naturally.
大气冲刷清除能自然去除污染物。
Use washout naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象暴雨把泥沙“洗出去”（wash out），地面留下一条washout（冲蚀沟）。
语域：neutral 常见场景：geology、civil engineering、hydrology 在表示“水流突然冲刷造成的侵蚀或冲蚀沟”的义项中，washout 通常用于地质学、土木工程、水文学等专业书面语境，语气偏中性或正式；日常口语中较少这样使用。
These words all share the spelling chunk -out and the final sound /aʊt/. Note that in washout the main stress falls on wash-, so the -out syllable is not stressed; these one-syllable words stress /aʊt/ themselves, so they are not exact rhymes with the whole compound. Also beware lookalikes such as rough /rʌf/ and cough /kɒf/, whose -ough spells different sounds.
Dictionary facts from ECDICT, WIKTIONARY.