The larvae must feed during their trip, and their springtime release coincides with a peak in algae raining down from surface waters.

幼虫必须在旅途中进食，而它们在春天的释放正好赶上了藻类从地表水倾泻而下的高峰。

youdao

Fuel was seeping through the joints, raining down on the hangar floor.

燃料从接缝渗出，雨点般落到机棚地上。

youdao

And its energy, raining down on the home planet, is utterly necessary for the maintenance of all life.

和它的能量，下雨了，地球家园，是所有生命的维持十分必要。

youdao

The first half was more notable for rain than chances raining down on goal.

BBC: Newport County 2-1 Wrexham

Witnesses described Calvert "raining down blows" on his victim during the attack in an argument over money.

BBC: Michael Calvert

Up ahead, a group of Americans, some wounded, were desperately trying to escape the bullets raining down.

WHITEHOUSE: The White House