ろくじゅうだい
(one's) 60s; sixties
Also written 六十代
Noun
その間あいだにトニーは60代ろくじゅうだい半なかばになっていたが、まだよく仕事しごとができた。しかし新品しんぴんのトラック、新あたらしい芝刈しばかり機き、たくさんの装備そうびを手てに入いれ3人さんにんの手伝てつだいを抱かかえていた。
By then Tony was in his middle sixties and still able to work hard, but he had a brand-new truck now, a new mower, a lot of other equipment and three people helping him.