a binding agreement
(法的)拘束力のある協定
a brace of red, blue and green pencils
ひと束の赤・青・緑の鉛筆
a broken promise
守られなかった約束
a bunch of flowers
1束の花
a bunch of keys
かぎの束
a bunch of keys [flowers]
かぎ[花]束
a bundle of straw
1束のわら
a fibrovascular bundle
維管束
a hollow promise
から約束
a man [a woman] of his [her] word
約束を守る人