a regulation ball的意思|示意
规则球
a regulation ball的网络常见释义
指定球 ... a regulation cap [uniform] 制帽 [服] exceed the regulation speed 超过规定速度 a regulation ball 指定球 ...
a regulation ball相关例句
"Obviously, this won't be a regulation ball," Miss Lin said.
“显然，这将不会是一个标准的足球，”林女士说。
One kind is: The jumper stands first outside the field this end throws a small tile to another end lield. The tile cannot go beyond a line, cannot the line ball, otherwise violates a regulation.
其中的一种是：跳者先站在田外的这一端向另一端田内扔一块小瓦片，小瓦片不能出线、又不能压线，否则就算犯规。