1
sth chugs
主语通常是发动机、火车等机械，表示发出低沉而有节奏的爆裂声。
The old engine chugged as the bus climbed the hill.
公共汽车爬坡时，那台老发动机发出嘎嚓声。
嘎嚓声
先理解核心含义，再看它在真实句子里的用法。
嘎嚓声
the dull explosive noise made by an engine
The old engine chugged as the bus climbed the hill.
公共汽车爬坡时，那台老发动机发出嘎嚓声。
低沉而快速的爆炸声或敲击声,如吃力运转的发动机发出的声音。
A dull, fairly quick explosive or percussive sound, as if made by a labouring engine.
巴哥犬和吉娃娃的杂交犬。
A dog that is a cross between a pug and a chihuahua.
一大口饮料。
A large gulp of drink.
古巴自制船只,用于运送移民至美国,到达后常被弃置。
A homemade Cuban boat, built to carry emigrants to the USA, and often abandoned upon arrival.
The little train chugged up the mountain slowly.
小火车嘎嚓嘎嚓地慢慢爬上山。
We sat on the porch, listening to the old engine chugging in the garage.
我们坐在门廊上，听着旧发动机在车库里嘎嚓作响。
The boat chugs across the lake every morning.
这艘船每天早晨嘎嚓嘎嚓地驶过湖面。
主语通常是发动机、火车等机械，表示发出低沉而有节奏的爆裂声。
The old engine chugged as the bus climbed the hill.
公共汽车爬坡时，那台老发动机发出嘎嚓声。
along 后接道路、轨道等，表示一边发出嘎嚓声一边缓慢移动。
The little train chugged along the narrow track.
小火车沿着狭窄的轨道嘎嚓嘎嚓地前进。
名词用法，指某种机械持续发出的低沉噪音。
I love the chug of a steam engine.
我喜欢蒸汽发动机的嘎嚓声。
Not this
The train was chuging up the hill.
Use this
The train was chugging up the hill.
chug 是单音节词，末尾为辅音字母 g，加 -ing 构成现在分词时须双写 g，故为 chugging；chuging 是拼写错误。
Not this
The engine made loud chug.
Use this
The engine made a loud chug.
chug 作名词是可数名词，表示“嘎嚓声”时前面需要冠词或其他限定词；这里指“一声响亮的嘎嚓声”，应加不定冠词 a。
Not this
The old engine chugged a loud sound.
Use this
The old engine chugged loudly.
chug 作动词是不及物动词，不能直接接 a loud sound 作宾语；要表达“响亮地发出嘎嚓声”，应用副词 loudly 修饰动词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
发动机的嘎嚓声
The chug of the engine slowly faded in the distance.
发动机的嘎嚓声在远处渐渐消失。
嘎嚓嘎嚓地前进；缓慢而持续地行进
The little train chugged along the narrow track.
小火车沿着狭窄的轨道嘎嚓嘎嚓地前进。
嘎嚓嘎嚓地爬上（坡等）
The old truck chugged up the steep hill.
旧卡车嘎嚓嘎嚓地爬上了陡坡。
嘎嚓响着经过
A steam locomotive chugged past the station.
一台蒸汽机车嘎嚓响着驶过车站。
嘎嚓响着穿过（水域等）
The ferry chugged through the harbor.
渡船嘎嚓响着穿过港口。
稳定的嘎嚓声
We fell asleep to the steady chug of the generator.
我们在发电机稳定的嘎嚓声中睡着了。
缓慢而稳定地继续；艰难前行
The project is still chugging along despite the budget cuts.
尽管预算削减，这个项目仍在缓慢而稳定地推进。
大口快速喝下；一口气喝完
He chugged down a glass of water before heading out.
他出门前一口气喝完了一杯水。
一口气喝光；干杯
They dared him to chug-a-lug a can of soda.
他们激他一口喝完一罐汽水。
喝光！喝光！喝光！
The crowd chanted “Chug! Chug! Chug!” as he chugged a beer.
人群高喊“喝光！喝光！喝光！”，他则一口气喝完了一杯啤酒。
Use chug naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
chug 读起来像老火车头有节奏的“嘎嚓、嘎嚓”排气声，联想它一边发出这种闷响一边前进，就记住了词义。
语域：neutral 常见场景：describing engine or locomotive noises、narrative scenes with old machinery、casual conversation chug 是拟声词，通常用于描述发动机或机车发出的沉闷声响；在一般叙述和日常口语中都比较自然，正式语体中较少使用。
这些词都以 -ug 拼写，发音均为 /ʌɡ/，与 chug /tʃʌɡ/ 押韵。注意：chug 的 ch 读 /tʃ/，不是 /k/ 或 /ʃ/；也不要将 -ug 与 -ough 混淆，如 rough /rʌf/、cough /kɒf/、through /θruː/ 的读音都不同。
Dictionary facts from ECDICT, WIKTIONARY.