They add silver iodide, dry ice and liquid nitrogen to the clouds causing immediate precipitation.

他们把碘化银、干冰及固态氮加入云层当中形成直接降雨。

U.S. carmakers are rushing to add more fuel-efficient smaller vehicles and hybrids to their fleets in the immediate future.

美国汽车制造商正急于尽快地生产更多的燃料效率的小型车辆和混合动力车型。

That may seem a long time to wait, and it will add to the list of disappointments for those who had hoped for immediate transformation.

看来还要等上很长时间，这将会使那些希望立即看到转变的人更为不满。