(1)生まれる子供の数を制限すること
(2)limiting the number of children born
さらに詳しく
(1)支払いがされたという（普通有形の）承認書
(2)an acknowledgment (usually tangible) that payment has been made
(1)あなたが手形か口座から現在受け取ると予想しているお金
(2)money that you currently expect to receive from notes or accounts
