動詞 erupt:

1. start abruptly
   同義詞：break out
2. erupt or intensify suddenly
   同義詞：irrupt, flare up, flare, break open, burst out
3. start to burn or burst into flames
   同義詞：ignite, catch fire, take fire, combust, conflagrate
4. break out
   同義詞：come out, break through, push through
5. become active and spew forth lava and rocks
   同義詞：belch, extravasate
6. force out or release suddenly and often violently something pent up
   同義詞：break, burst
7. appear on the skin
8. become raw or open
   同義詞：recrudesce, break out

1. An active volcano may erupt at any time.
   活火山隨時可能噴發(fā)。
2. A rash has erupted all over my back.
   我的背上出滿了疹子。
3. It's many years since Mount Vesuvius last erupted.
   維蘇威火山上一次爆發(fā)至今已有很多年了。
4. The demonstration erupted into violence.
   示威游行中突然出現(xiàn)了武斗。
5. Violence has erupted on the streets.
   大街上突然發(fā)生了暴亂。

e.rupt

v.（動詞）
e.rupt.ed,e.rupt.ing,e.rupts
v.intr.（不及物動詞）
To emerge violently from restraint or limits; explode:
發(fā)作：從約束和限制中突然冒出；爆發(fā)：
例句：
My neighbor erupted in anger over the noise.
噪聲使我的鄰居勃然大怒

To become violently active:
（尤指火山）爆發(fā)：劇烈活動：
例句：
The volcano erupted after years of dormancy.
那座火山在沉睡多年后劇烈活動起來

To force out or release something, such as steam, with violence or suddenness.
發(fā)出：突然或者是猛烈地噴發(fā)或放出，如水蒸氣

To break through the gums in developing. Used of teeth.
長出：慢慢地長出牙床。用于指牙齒
To appear on the skin. Used of a rash or blemish.
發(fā)疹：皮膚上出現(xiàn)。用于指發(fā)疹或斑點
v.tr.（及物動詞）
To force out violently.
爆發(fā)：猛烈地爆發(fā)

來源：
Latin ôrumpere ôrupt-
拉丁語 ôrumpere ôrupt-
ô-, ex- [ex-]
ô-, ex- [表示.不完全，徹底.]
rumpere [to break] * see reup-
rumpere [打碎，打破] *參見 reup-

【引伸】
erup.tive
adj.（形容詞）
erup.tively
adv.（副詞）