你是不知道现在人口发展的趋势。现在特别是在很多发达国家,许多年轻人为了事业都选择不要小孩,宁愿享受二人世界。不难预见不久的将来,年轻人和老年人的比例将严重失调。
nǐ shì bù zhīdào xiànzài rénkǒu fāzhǎn de qūshì 。xiànzài tèbiéshì zài hěn duō fādá guójiā ,xǔduō niánqīngrén wéile shìyè dōu xuǎnzé bùyào xiǎohái ,nìngyuàn xiǎngshòu èrrénshìjiè 。bù nán yùjiàn bùjiǔ de jiānglái ,niánqīngrén hé lǎoniánrén de bǐlì jiāng yánzhòng shītiáo 。
You don't know about trends in modern population growth. These days, especially in developed countries, for the sake of their careers a lot of young people choose not to have children. They'd rather enjoy life as a couple. It's not hard to see that in the not-distant future, the ratio of young to old people will be seriously out of whack.