ph.

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 .

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

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

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