被认为

Bromate was selected as the internal standard because it was impossibly present in original saliva and it did not interfered with the selected three anions.

溴酸盐因为不可能存在于原始的唾液中，并且不干扰所选择的三种离子的分离，因此被选为内标物。

In general, those investment diversities are the results of interactions of many biological traits to meet embryo and nestling development under the predation pressure and interspecies competition.

总之，如此不同的投资差异是在捕食压力和种间竞争作用下以及亲鸟为满足鸟卵胚胎和雏鸟迅速生长发育的必要条件下，各种生物学特征协调的结果。