词根：bull = to boil, seal

  来自拉丁语的bull 意为to boil,seal。同义词根有来自拉丁语的ferv。

同源词：

1. ebullient（向外、向上沸腾的e<ex(=out,up) + bull(=boil)）
  adj.沸腾的；热情洋溢的，奔放的
  ebullience /ebullition 沸腾；感情的奔放
  She's very likely ,with an ebullient personality. 她热情洋溢又很漂亮。

2. bulletin
  n.公告，告示，公报；（电视广播的）新闻快报；（学会等的）会报，学报
  bulletin board 布告栏，布告牌

3. bullet
  n.子弹
  bulletproof adj.防弹的
  bulletproof jacket /vest 防弹衣/背心

4. bully
  n.欺凌弱小者,恶霸
  v.威吓，胁迫
  adj. <口>极好的

词根词缀：bull-, bulli-

【来源及含义】Latin: to bubble, a bubble; to blister, a blister

【相关描述】Additional words related to this unit are available at this "bubble" unit.

【相关词根词缀】Cross references of word groups that are related, partially or extensively, to: "blister, bump, swelling": ichor-; papulo-; pemphig-; puro-; pus-; pustu-; pyo-; suppurant-; tum-; vesico-; vesiculo-.

【同源单词】budge, bulla, bulla tympani, bullation, bullectomy, bullition