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fall by the wayside
固定短语，字面为“倒在路边”，常用来比喻失败、不能坚持到底。
Many students fall by the wayside in the first year.
许多学生在第一年就半途而废。
路旁
先理解核心含义，再看它在真实句子里的用法。
路旁
side of a road or path
Many students fall by the wayside in the first year.
许多学生在第一年就半途而废。
路边；道路旁
The side of a road or path.
休息区
A rest area.
We stopped the car at the wayside to enjoy the view of the valley.
我们把车停在路边，欣赏山谷的景色。
The old house stood by the wayside, and many travelers stopped there for a rest.
那座老房子坐落在路边，许多旅行者在那里停下来休息。
Flowers bloomed along the wayside all the way to the village.
一路上，鲜花沿着路边一直开到村庄。
固定短语，字面为“倒在路边”，常用来比喻失败、不能坚持到底。
Many students fall by the wayside in the first year.
许多学生在第一年就半途而废。
名词 wayside 用于介词后，表示“路旁、路边”。
Wildflowers grew along the wayside.
野花沿路边生长。
wayside 可作定语，相当于形容词“路旁的”。
They took a rest at a wayside inn.
他们在一家路边客栈休息。
Not this
We had a picnic at wayside.
Use this
We had a picnic at the wayside.
wayside 是可数名词，表示“路边”时前面需要限定词（如 the）；汉语没有冠词，学习者容易漏掉，所以这里必须加 the。
Not this
Many students fell beside the wayside before the exam.
Use this
Many students fell by the wayside before the exam.
fall by the wayside 是固定习语，意为“中途放弃/半途而废”，介词必须用 by，不能用表示具体位置的 beside。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
半途而废；中途失败
Many startup companies fall by the wayside within their first year.
许多初创公司在第一年内就半途而废。
在路边；在路旁
We picnicked by the wayside on our drive to the coast.
我们在去海边的路上，在路边野餐。
路边神龛
Villagers light candles at the wayside shrine every evening.
村民们每晚都在路边神龛前点蜡烛。
路边客栈
The travelers spent the night at a wayside inn.
旅客们在一家路边客栈过夜。
路边小站
The train stopped briefly at a small wayside station.
火车在一个路边小站短暂停靠。
路边野花
She picked a wayside flower on her walk.
她散步时摘了一朵路边野花。
半途而废；中途失败；被搁置
Many small businesses fall by the wayside during a recession.
许多小企业在经济衰退期间倒闭了。
被抛弃；被放弃；被遗忘
Those old customs have gone by the wayside in modern society.
那些旧习俗在现代社会已被抛弃。
把某人抛在一边；弃之不顾
We can't leave the new employees by the wayside without proper training.
我们不能不给新员工适当的培训就把他们丢在一边。
有些种子落在路旁，飞鸟来吃尽了。
His plans to exercise daily soon fell by the wayside.
他每天锻炼的计划很快就荒废了。
Use wayside naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
way 是路，side 是边，way + side = 路边。
语域：mixed 常见场景：idiomatic phrase "fall by the wayside"、descriptive/literary writing about roads or travel wayside 多用于书面或描写性语境；最常见的是固定搭配 fall by the wayside（半途而废/被搁置）。表示“路旁的”时（如 wayside inn）也比较常见于文学或正式描写，口语中较少单独使用。
真正与 wayside /ˈweɪsaɪd/ 押韵的是 dayside /ˈdeɪsaɪd/，重读元音 /eɪ/ 和其后的 /saɪd/ 相同。其他词只是拼写以 -side 结尾，读音不押韵：side /saɪd/ 元音是 /aɪ/；roadside /ˈroʊdsaɪd/、seaside /ˈsiːsaɪd/、countryside /ˈkʌntrisaɪd/ 的重读元音分别是 /oʊ/、/iː/、/ʌ/；inside /ˌɪnˈsaɪd/ 是后重读，元音也是 /aɪ/。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.