英语语法分析

There were many, many nightingales, and how then should he find out which was his Jorinda?

有许许多多只夜莺，那他怎么知道哪只是他的约丽丹呢？

To obtain empirical data regarding the energy costs of singing, Thomas examined the relationship between song rate and overnight changes in body mass of male nightingales.

为了获得有关唱歌能量消耗的经验数据，托马斯研究了鸣声率与雄性夜莺在夜间的体重变化之间的关系。

The strategic regulation of evening body reserves is also likely to incur additional costs, as nightingales must spend more time foraging in order to build up larger body reserves.

晚间的身体储能的策略管理机制，也会产生额外的能量支出，这样夜莺就必须花更多时间找食物，来增加储能。