VOA慢速英语:Climbers Break New Records Reaching the Top of the World's Highest Mountain

1.But that attempt was canceled after a storm caused a giant mass of snow to slide down the mountain, killing seven ethnic Sherpa guides.

slide down滑下

例句：The slimy snail slid slowly down the slide.
      粘滑的蜗牛在滑面上慢慢地下滑。

2.He said they were moving toward the top when clouds hid them.

move toward朝某一方向

例句：To cause to move toward a goal; aim.
       引导而向目标移动;瞄准

3.In nineteen ninety-nine, climbers set off to search for the remains of Mallory and Irvine.

set off出发, 动身

例句：He proposed to set off immediately.
      他建议立即动身。

4.But the debate continues as to whether this famous team reached the top of Mount Everest.

as to至于, 关于

例句：I have no doubts as to your ability.
      关于你的能力我毫不怀疑。