1
bulk up
bulk up 常指通过饮食和锻炼增加肌肉量，多为不及物用法。
He has been bulking up at the gym.
他一直在健身房增肌。
增肌；增加体重
bulks — third person singular of bulk
先理解核心含义，再看它在真实句子里的用法。
增肌；增加体重
To gain body mass, especially muscle, through diet and exercise.
He has been bulking up at the gym.
他一直在健身房增肌。
显得；好像,就体积或程度而言。
To appear or seem to be, as to bulk or extent.
变大；膨胀或扩张。
To grow in size; to swell or expand.
通过饮食、锻炼等增加体重。
To gain body mass by means of diet, exercise, etc.
散装存放或持有。
To put or hold in bulk.
bulk
Base
原形
bulks
3rd person
第三人称单数
bulking
-ing
现在分词
bulked
Past
过去式
bulked
Past participle
过去分词
The report bulks up to over 100 pages.
这份报告篇幅超过100页。
The computer bulked large in the room.
那台电脑在房间里显得很大。
The clouds are bulking up on the horizon.
云层正在地平线上聚集增大。
bulk作为动词是规则变化，过去式和过去分词加-ed。
The unresolved issues bulked large in their discussions.
未解决的问题在他们的讨论中显得很重要。
He has been bulking up by lifting weights every day.
他每天通过举重来增加肌肉。
The company bulked its product line by adding new flavors.
公司通过增加新口味来扩大产品线。
bulk up 常指通过饮食和锻炼增加肌肉量，多为不及物用法。
He has been bulking up at the gym.
他一直在健身房增肌。
bulk large 是较正式的书面表达，意为‘显得突出或重要’，主语多为抽象事物。
The issue of safety bulks large in the discussion.
安全问题在这次讨论中显得很重要。
bulk out 可用作及物动词，后直接接宾语，常搭配 with 表示所用的材料。
She bulked out the essay with more examples.
她用更多例子充实了那篇文章。
Not this
I want to bulk my body.
Use this
I want to bulk up my body.
表示“增肌/增重”时，bulk 是不及物动词，通常与 up 构成短语动词 bulk up，不能直接把宾语接在 bulk 后面，所以应改为 bulk up my body，或直接说 bulk up。
Not this
This issue bulks importantly in the election.
Use this
This issue bulks large in the election.
bulk 在这个义项（显得重大/重要）中要用固定搭配 bulk large，large 不是修饰动词的方式副词，不能用 importantly 代替；bulk large 意为“显得重要、变得突出”。
Choose the next layer that will help you use bulks with more confidence.
Recommended next
Missing: Confusing words
Complete this area with confusing words.
More ways to explore
Includes Synonyms & Antonyms
Expand your vocabulary with synonyms and antonyms.
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
增肌；增加体重
He has been bulking up by lifting weights and eating a lot of protein.
他一直通过举重和吃大量蛋白质来增肌。
显得重要；显得突出
The problem of climate change bulks large in today's political debate.
气候变化问题在当今政治辩论中显得尤为重要。
使…更厚实；充实
She bulked out her article with a few more examples.
她用更多例子充实了她的文章。
显得重要；起重大的作用
The problem of poverty bulks large in the government's agenda.
贫困问题在政府的议程中显得极为重要。
增重；变得更强壮
She has been bulking up with protein shakes and weightlifting.
她一直在通过蛋白奶昔和举重来增肌。
大量地；成批地
It's cheaper to buy rice in bulk.
批量购买大米更便宜。
Use bulks naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 bulk 里的 b 想成鼓起的肚子：bulk 就是“变大、增肌、显得庞大”的动作。
语域：informal 常见场景：健身房/增肌训练、健身论坛或社交媒体 表示“增肌/增加体重”时，多用于健身、运动营养等日常语境，常以 bulk up 的形式出现；这一用法偏口语化，正式文件或学术文章中较少使用。
hulk、sulk、skulk 与 bulk 的 /ʌlk/ 韵脚相同；注意 balk 拼写相似但元音为 /ɔː/，bulb 开头相似但结尾是 /b/。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY, WORDNET.