Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

ネコがのどを鳴らす音は、“声紋”のように機能する：研究結果

WIRED.jp @wired.jp@web.brid.gy

ネコの鳴き声といえば「ニャー」だが、のどを鳴らす「ゴロゴロ」という音のほうが実は個体識別に適しているという。個体ごとに固有の音響特性をもつ"声紋"のように機能していることが、このほど最新の研究で明らかになった。

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