成年人的英文：
adult

• The major was very studious of his appearance.
  成年人十分注意自己的外表。
• It meant the phylogenetic and ontogenetic development of human adult behaviour
  它意指成年人行为的系统发育与个体发育的发展。
• Why were grown-ups always so stuffy and slow to recognize good ideas?
  为什么成年人总是那么一本正经，对好点子反应那么迟缓呢？
• [ Administration and dosage]Adults: 1 tablet, 3 4 times daily.
  [服法与剂量]成年人:每次l片,1日3～4次。
• I'm already a major.
  我已经是个成年人了。
• Mature subject matter.
  成年人考虑的问题
• The attitude of grownups has changed.
  成年人的态度已有了转变。
• Many adults also have some acne easily.
  成年人也很容易得痤疮。
• Children pick up foreign languages easier than adults.
  孩子们学外语比成年人容易。
• Grown-ups often look back to the old days.
  成年人常常回想过去的日子。

• These films are suitable for adults only.
  这些电影只适宜成人观看。
• Children unaccompanied by an adult will not be admitted.
  儿童无成人带领不得入内.
• The bear was a fully grown adult.
  那只熊已完全发育成熟。
• In the eyes of the law you are not an adult.
  从法律的角度看你还没有成年。
• Meeting adults embarrassed the shy child.
  和家长见面使得这个害羞的孩子很尴尬。