Don't blame Ka-ming anymore. In your days, didn't you behave impetuously without a second thought?
Cantonese
未成年少女
未成年少女
underage girl
Examples (Wiktionary)
Mandarin
尹雪艳总也不老。十几年前那一班在上海百乐门舞厅替他捧场的五陵年少，有些头上开了顶，有些鬓添了霜。
尹雪豔總也不老。十幾年前那一班在上海百樂門舞廳替他捧場的五陵年少，有些頭上開了頂，有些鬢添了霜。
yǐn xuě yàn zǒng yě bù lǎo ． shí jǐ nián qián nà yī bān zài shàng hǎi bǎi lè mén wǔ tīng tì tā pěng chǎng de wǔ líng nián shào ， yǒu xiē tóu shang kāi le dǐng ， yǒu xiē bìn tiān le shuāng ．
Yin Hsueh-yen somehow never seemed to age. Of those fashionable young men who had been her admirers more than a dozen years ago in Shanghai's Paramount Ballroom, some had grown bald on top and some were graying at the temples.
Mandarin
尹雪艳总也不老。十几年前那一班在上海百乐门舞厅替他捧场的五陵年少，有些头上开了顶，有些鬓添了霜。
尹雪豔總也不老。十幾年前那一班在上海百樂門舞廳替他捧場的五陵年少，有些頭上開了頂，有些鬢添了霜。
yǐn xuě yàn zǒng yě bù lǎo ． shí jǐ nián qián nà yī bān zài shàng hǎi bǎi lè mén wǔ tīng tì tā pěng chǎng de wǔ líng nián shào ， yǒu xiē tóu shàng kāi le dǐng ， yǒu xiē bìn tiān le shuāng ．
Yin Hsueh-yen somehow never seemed to age. Of those fashionable young men who had been her admirers more than a dozen years ago in Shanghai's Paramount Ballroom, some had grown bald on top and some were graying at the temples.
Mandarin
年少无知
年少無知
nián shào wú zhī
young and ignorant
Mandarin
年少时候，从来不用担心这个平安夜要一个人过。有了爱情之后，平安夜变得浪漫了，可是，也会担心今年的平安夜没有人陪。
年少時候，從來不用擔心這個平安夜要一個人過。有了愛情之後，平安夜變得浪漫了，可是，也會擔心今年的平安夜沒有人陪。
nián shào shí hou ， cóng lái bù yòng dān xīn zhè ge pín gān yè yào yī gè rén guò ． yǒu le ài qíng zhī hòu ， pín gān yè biàn de làng màn le ， kě shì ， yě huì dān xīn jīn nián de pín gān yè méi yǒu rén péi ．
When I was young, I never had to worry that I had to celebrate this Christmas Eve alone. When I got into a relationship, Christmas Eve became romantic, but I would also worry that I would have no one with me for Christmas Eve this year.