劍橋詞典A person's thirties are the period in which they are aged between 30 and 39 三十多嵗 My brother is in his thirties. 我弟弟三十幾嵗。 ?the thirties the range of temperature between 30° and 39° （溫度）三十多度 The temperature is expected to be in the thirties tomorrow . 明天溫度預(yù)計爲三十幾度。 the decade (= period of ten years ) between 30 and 39 in any century , usually 1930–1939 三十年代 My grandparents fled Germany in the thirties. 我的祖父母在30年代逃離了德國。 返回 thirties