Most of the world's international data is transmitted through them, such as online shopping, video calls, banking transactions, and information between countries.
xiàn zài现在,hǎi dǐ海底yǒu有wǔ bǎi duō tiáo五百多条zhèng zài正在shǐ yòng使用de的diàn lǎn电缆,zǒng总cháng dù长度chāo guò超过yì bǎi sì shí wàn一百四十万gōng lǐ公里。
Currently, there are more than 500 active submarine cables, with a total length exceeding 1.4 million kilometers.
tā men它们hěn很zhòng yào重要,dàn但yě也bǐ jiào比较cuì ruò脆弱。
Many big tech companies and governments are investing in, protecting, and paying attention to these cables because whoever can better build and manage these networks may have greater influence in the digital age.