Its bulk was an obvious burden in flight, as the poor thing tried to bump its way to the flowers.

蝴蝶巨大的体积在飞行时显然是个负担，这可怜的家伙听跌跌撞撞飞向那些花。

youdao

I have to believe that the bulk of the killing took place on the flight and so that's why that works out.

但我相信,惨重的伤亡会在逃跑时出现,这就是为什么会算出那么惨重的伤亡数字

耶鲁公开课 - 古希腊历史简介课程节选

It took four searches over the course of nearly two years to locate the bulk of Flight 447's wreckage and the majority of the bodies in a mountain range deep under the ocean.

CNN: STORY HIGHLIGHTS