大人から子供まで楽しめる be suitable for both kids and adults

大人から十分な愛情を得られる環境で育つ be brought up in an environment where one can receive ample love from adults

大人がすっぽり入る大きさ easily big enough for an adult to fit inside

大人がそばにいない所で without an adult around

大人が一緒に行かないで本当に大丈夫?まだ11歳なのよ,誘拐かなんかに遭ったらどうするのよ? Is it really OK to let Mike go without any adults? He's only 11. What if he's kidnapped or something?◆file:KI-01025.htm

大人が学び続けられる社会 society in which adults continue to learn

大人が起こした戦争の犠牲になりつつある子供たちへの懸念 concern about children becoming victims in the conflicts of adults

大人が見ていない所で without an adult around

大人が子供とともにさまざまな活動に参加する機会を提供する provide increased opportunities for adults to participate [take part] in various events with children

大人が入れるだけの十分な大きさ easily big enough for an adult to fit inside

大人が付き添って under the supervision of an adult

大人げない unworthy of a grown man●unworthy of a grown woman 【形】babyish●childish●immature