迸发; 大声喊叫; 突然发生

ph.

1. They burst out laughing.
他们突然大笑起来。

1. 迸发;突然...起来：91. waste one's breath白费口舌 | 92. burst out迸发;突然...起来 | 93. burst into tears突然大哭

2. 突然说出;突然(哭、笑、叫)起来：break out爆发;突然发生 | burst out突然说出;突然(哭、笑、叫)起来 | cross one's mind突然想起;突然从脑海中掠过,想起来

3. 闯出来：burst out laughing 突然笑起来 | burst out 闯出来 | burst through 推开

1. 突然…起来
If someone bursts out laughing, crying, or making another noise, they suddenly start making that noise. You can also say that a noise bursts out .

e.g. The class burst out laughing...
全班突然大笑起来。
e.g. Then the applause burst out...
然后突然掌声雷动。

2. 突然说出；大声喊出
If someone bursts out something, they say it suddenly and loudly.

e.g. 'I want to be just like you', she bursts out.
“我想就像你一样。”她大声喊道。

3. 突然出现；突然发生
If a situation or problem bursts out, it suddenly appears.

e.g. Malaria is bursting out again all over the world...
疟疾突然又在全世界流行起来。
e.g. Then war burst out.
战争突然爆发。

verb

1. erupt or intensify suddenly

e.g. Unrest erupted in the country
Tempers flared at the meeting
The crowd irrupted into a burst of patriotism

Synonym: eruptirruptflare upflarebreak open

2. appear suddenly

e.g. Spring popped up everywhere in the valley

Synonym: pop out

3. give sudden release to an expression

e.g. We burst out laughing
'I hate you,' she burst out