英语语法分析

Both were left over from Ashbaugh's research phase, when, to the dismay of his Wainscott landlord, he bred mosquitoes in stagnant water on his porch.

这些汗液和海绵都是阿什宝在温斯科特做实验时剩下的，那时他为了搞研究，在出租房走廊里的死水里养蚊子，惹的他的房东非常不快。