speak by the card

To speak from accurate information, without guessing.

Japanese Meaning

正確な情報に基づいて、推測せずに話すこと / 正しい情報をもとに、推測なく発言すること / 信頼できる情報を基に、予測や当て推量せずに語ること

She will speak by the card, citing only verified sources rather than guessing.

彼女は推測せず、確認された情報に基づいて話すだろう。

Sense（1）

To speak from accurate information, without guessing.

speaks by the card

（ present singular third-person ）

speaking by the card

（ participle present ）

spoke by the card

（ past ）

by the card

（ colloquial participle past ）