Meaning of lǎo dà:
老大
old age; eldest child in a family; leader of a group; boss; captain of a boat; leader of a criminal gang
Tā xiànzài yǐjīng guò shàngle shūshì de lǎodà shēnghuó.
他现在已经过上了舒适的老大生活。
He is now living a comfortable old age.
Tā shì jiālǐ de lǎodà, suǒyǐ chángcháng xūyào fùzé zhàogù dìdì mèimei.
他是家里的老大，所以常常需要负责照顾弟弟妹妹。
He is the eldest child in the family, so he often needs to take care of his younger siblings.
Tā shì wǒmen gōngsī de lǎo dà.
他是我们公司的老大。
He is the leader of our company.
Zài gōngsī lǐ, tā shì wǒmen de lǎodà.
在公司里，他是我们的老大。
In the company, he is our boss.
Tā shì zhè sōu chuán de lǎo dà.
他是这艘船的老大。
He is the captain of this boat.
Tā shì zhège fànzuì tuánhuǒ de lǎo dà.
他是这个犯罪团伙的老大。
He is the leader of this criminal gang.
very
Zhè gè xiàng mù duì wǒ men de chéng gōng hěn lǎo dà.
这个项目对我们的成功很 老大。
This project is very important for our success.
