Subject + 长大 + (Amount)
长大 (zhǎng dà) means "to grow bigger" or "to grow up." When used to describe physical growth, it indicates an increase in size, height, or length. It can describe both living things growing and abstract increases in scale.
这棵小树苗终于长大了,都有三米高了。
Zhè kē xiǎo shùmiáo zhōngyú zhǎng dà le, dōu yǒu sān mǐ gāo le.
This little sapling has finally grown up — it's already three meters tall.
孩子们一天天长大,时间过得真快。
Háizimen yī tiān tiān zhǎng dà, shíjiān guò de zhēn kuài.
The children are growing up day by day — time really flies.
等你长大了就会明白父母的苦心。
Děng nǐ zhǎng dà le jiù huì míngbái fùmǔ de kǔxīn.
When you grow up, you'll understand your parents' good intentions.
这棵小树苗终于长大了,都有三米高了。
Zhè kē xiǎo shùmiáo zhōngyú zhǎng dà le, dōu yǒu sān mǐ gāo le.
This little sapling has finally grown up — it's already three meters tall.
孩子们一天天长大,时间过得真快。
Háizimen yì tiān tiān zhǎng dà, shíjiān guò de zhēn kuài.
The children are growing up day by day — time really flies.
等你长大了就会明白父母的苦心。
Děng nǐ zhǎng dà le jiù huì míngbái fùmǔ de kǔxīn.
When you grow up, you'll understand your parents' good intentions.