通常，当磷元素向新生组织转移时，较老的叶片首先受到了影响。

Typically, older leaves are affected first as the phosphorus is mobilized to young growing tissue.

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胎儿出生之后，母亲向新生儿提供了天然的食物来源。

Following birth, a mother provides a natural food source for the newborn.

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重庆高校今夏向新生发放安全知识手册，特别提示大学生不要轻易和网友见面。

A safety manual issued by universities in Chongqing to freshmen mentions the potential danger of meeting e-friends.

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