If you want to know where to go you have to know where you came from.

想知道往哪兒去就得清楚自己從哪來(lái)。

語(yǔ)言點(diǎn):注釋:if conj. 如果,倘若,假如(引導(dǎo)條件狀語(yǔ)從句)

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