Now, China has overtaken Russia, becoming the second country in the world who has two fourth-generation fighter jets in test flight period after the United States.

这标志着中国超过俄罗斯，成为继美国后第二个同时试飞两种四代机的国家。

youdao

However, there are not many countries in the world who can afford fourth-generation fighter jets and J-31 has to compete against T-50 of Russia and F-35 of the U. S. in the international market.

不过，目前世界上有能力购买四代机的国家为数不多，且歼- 31还面对着俄罗斯t - 50和美国F - 35战机等强大的竞争对手。

youdao

Type: fourth - generation single - engine, single - seater multirole fighter capable for interception, air superiority, and ground attack missions.

类型：第四代单引擎，单座，担当拦截、空优和对地攻击的多任务战斗机。

youdao

Given that Russia has already teamed up with India to co-develop and co-produce a version of Moscow's fifth-generation fighter, and that China is co-developing with Pakistan a very low-cost fourth-generation fighter, the U.S. may decide to try and protect market share and lift an export ban on F-22s.

FORBES: Magazine Article

China has built more than 500 fourth-generation combat aircraft and is moving its fifth-generation fighter into testing.

CENTERFORSECURITYPOLICY: Center For Security Policy