Do you know these words?

• こむらがえり

  cramp in the calf

• はじめに

  to begin with ; at the beginning ; first

• せいちょう

  growth

• ちゅうにゅう

  injection

• おろす（ずぼんを〜/ぱんつを〜）

  to take down (one's pants/underwear)