It's not a matter of logic that the pen must fall; it's a matter of fact.

笔必须要下落，那并不是物质的逻辑而是物质事实。

youdao

It's not a matter of logic that the pen must fall; it's a matter of fact.

笔必须要下落，那并不是物质的逻辑而是物质事实。

youdao