柠檬酸可以从橙汁、柠檬汁、酸橙汁或柚子汁中提取。

Citric acid can be extracted from the juice of oranges, lemons, limes or grapefruit.

《柯林斯英汉双解大词典》

此外，柠檬、广柑、柚子等也有类似功效，可代替橘子。

In addition, the lemons, tangor and grapefruit also have similar efficacy so that they can take the place of Orange.

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用榨汁机榨出橙子、柚子、柠檬的汁液。

Juice the oranges, grapefruit and lemon with the juicer.

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