lěngzhàn / shíqī / Měi Sū / liǎng guó / zài / tàikōng / jìngsài / zhōng / zhǎnkāi / le / jīliè / jìngzhēng冷战时期,美苏两国在太空竞赛中展开了激烈竞争。During the Cold War, the United States and the Soviet Union engaged in intense competition in the space race.