He's obviously been asking her about thesources of some of the images and characters and themes in Wise Blood.
他显然是在问她《慧血记》中一些形象、角色和主题的来源。
2
He knew that thesources of the red-stained grains were generally closer to the North Pole than were the places yielding a high proportion of "clean" grains.
他知道,这些红色颗粒的来源通常更靠近北极,而不是那些产生大量“干净”颗粒的地方。
3
These springs are thesources of streams and rivers, which cut through the rocks and carry away debris from the mountains to the lowlands.