在英语中，黑板窗户可以翻译为 "blackboard window" 或 "chalkboard window", 而皮球可以翻译为 "leather ball" 或 "soccer ball"，具体使用哪一种词语取决于你想要描述的具体情况。
例如，如果你想描述一个教室里有一个黑板窗户，你可以说:
"There is a blackboard window in the classroom."
或者:
"There is a chalkboard window in the classroom."
如果你想描述一个人正在踢足球，你可以说:
"He is kicking a leather ball."
或者:
"He is kicking a soccer ball."