Some analysts say the Chinese have not been entirely pleased with their Su-27 and Su-30 fighters. Keeping them maintained and supplied with spare parts (from Russia) has not been easy.

一些分析家称中国对苏- 27和苏- 30战斗机并不是完全满意，对这些军备的保养和供应零件(从俄罗斯)都要费些周折。

youdao

Some analysts say the Chinese have not been entirely pleased with their Su-27 and Su-30 fighters.

有分析家称，中方并非完全满意他们的苏27和苏30战斗机。

youdao

American air superiority in the region is now challenged by more than 200 advanced Russian Su-27 and Su-30 fighters China has acquired since the 1990s.

自上世纪90年代起，中国陆续获得了超过200架的俄式苏27和苏30战斗机，如今这成为了美国在该地区空中优势的挑战。

youdao

It has purchased 300 to 400 Russian Sukhoi Su-27 fighters and Su-30 fighter-bombers, plus Russian A-50 AWACS and anti-air and ground attack missiles.

CENTERFORSECURITYPOLICY: Center For Security Policy

SU-27 fighter aircraft and has done a deal to assemble more of the planes itself.

ECONOMIST: China

SU-27 fighter bombers from Russia have already arrived in Ethiopia, along with container-loads of weapons through Djibouti.

ECONOMIST: Ethiopia and Eritrea