Officially the submarine entered the PLA Navy service in August 1983, but the test fire of the JL-1 SLBM did not succeed until September 1987.是什么意思_Officially the submarine entered the PLA Navy service in August 1983, but the test fire of the JL-1 SLBM did not succeed until September 1987.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句