It evokes the container metaphor of communication, in which we conceive of ideas as objects, sentences as containers, and communication as a kind of sending. As when we say we "gather" our ideas, to "put" them "into" words, and if our words aren't "empty" or "hollow," we might get these ideas "across" to a listener, who can "unpack" our words to "extract" their "content."
我 敢??? 这 里? 总 部 的 人 都不 知道? 这 件 事ted2019 ted2019