"Speak by the card" nghĩa là gì?

"Speak by the card" = nói theo hải đồ -> nghĩa là nói rất chính xác.

Ví dụ

I don't require a degree to speak by the card on things such as these.

They come not single spies", "we must speak by the card" (where we should say "we must speak by the book") and "the tune of the time".

What might be less trustworthy, of course, is how mathematical models are shared, construed, or even misinterpreted (hiểu sai, dịch sai) when they are reported on by nonexperts, such as government officials, journalists, and denizens (cư dân) of social media. Of greatest consequence, says Shelton, is that “we must interpret models appropriately. We have heard from some who seem to speak with authority but seem to lack the expertise to speak by the card.

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