国际海缆电路出租业务：四年。

International Submarine Cable Leased-Circuit Business: four years.

youdao

国际海缆电路出租业务：三年。

International Submarine Cable Leased-Circuit Business: three years.

youdao

国际海缆电路出租业务：三年。

International Submarine Cable Leased-Circuit Business: three years.

youdao