相关单词同義詞eldest son, eldest daughter, 近義詞 eldest 最年長的臨近詞firsts, first, first buyer, first shift, first draft, first entry, First Fleet, firstfruits, first force, first order, first-run, first sugar相似詞first-rate, first-time buyer, first-wave, first-world problem, firsthand, firstly, firth, fisc, 返回 firstborn