Subject + 冒出 + Noun
冒出 (màochū) is a verb meaning "to emerge from," "to emit," or "to give off." It vividly describes something appearing or coming out from a surface or opening, often unexpectedly. It is commonly used with substances like smoke, flames, or steam.
烟囱里冒出了浓浓的黑烟。
yān cōng lǐ mào chū le nóng nóng de hēi yān.
Thick black smoke billowed out of the chimney.
地面裂缝中突然冒出了热气。
dì miàn liè fèng zhōng tū rán mào chū le rè qì.
Hot steam suddenly burst out from cracks in the ground.
她脑海里冒出了一个大胆的想法。
tā nǎo hǎi lǐ mào chū le yī gè dà dǎn de xiǎng fǎ.
A bold idea suddenly popped into her mind.