“是的，”老人说，“你的心从表面来看很完美，但我绝不会跟你交换。”

"Yes," said the old man, "Yours looks perfect but I would never trade with you."

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今年的情人节，无数人会交换各式各样的心形礼物，从糖果到卡片不一而足。

This Valentine's Day, millions of people will exchange heart-shaped gifts of all kinds, from candy to CARDS.

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采用复相凝聚法和囊心交换二者相结合的方法，实现柠檬油香精的胶囊化。

Based on the method of re-agglomeration and capsule-heart exchange, the capsulization for limonene essence is investigated.

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