>>552
それは変なサイトではなくRust公式ページの日本語訳。
元のRust公式ページでも同様。

Ownership and moves
https://doc.rust-lang.org/rust-by-example/scope/move.html

Because variables are in charge of freeing their own resources,
resources can only have one owner.
This also prevents resources from being freed more than once.
Note that not all variables own resources (e.g. references)

When doing assignments (let x = y) or passing function arguments by value (foo(x)),
the ownership of the resources is transferred.
In Rust-speak, this is known as a move.