The forms swelled and swollen are both used as the past participle. swelled 和 swollen 均可用作过去分词。
1
[V-ERG 及物/不及物动词](使)膨胀;(使)扩大;(使)增加 If the amount or size of something
swells or if something
swells it, it becomes larger than it was before.
[V]
[V to/by n]
[V n to n]
[V-ing]
[V-ed]
[Also V n]
The human population swelled, at least temporarily, as migrants moved south...
随着移居者南移,人口出现膨胀,至少是暂时性膨胀。
By the end of this month the size of the mission is expected to swell to 280 people...
到这个月底,参加该任务的人员规模将有望增至 280 人。
His bank balance has swelled by £222,000 in the last three weeks...
在过去的 3 周里,他银行的存款多了 222,000 英镑。
Offers from other countries should swell the force to 35,000.
其他国家的支援将可使兵力增至 35,000 人。
...the ever-swelling numbers of the homeless...
无家可归者人数的持续增长
Its population is swollen by 360,000 refugees.
360,000 名难民使该国人口大增。
2
[VERB 动词](身体部位)肿胀,膨胀 If something such as a part of your body
swells, it becomes larger and rounder than normal.
Do your ankles swell at night?...
你夜里脚踝肿吗?
The limbs swell to an enormous size.
四肢肿得不得了。
Swell up means the same as swell .swell up 同 swell