plants while others eat a combination of both.
process through which land becomes part of a desert.
for example， pies， puddings， and ice cream.
Jane was talking with others while Eliza remained reticent all the time.
Most of us agreed; however， Bill dissented.
The hot-air balloon took off. It was as buoyant in the air as a cork (软木塞) in water.
Venus rotates retrograde， or “backwards”， spinning in the opposite direction of its orbit around the Sun.
The door was so low that I hit my head on the lintel.
He got on the motorbike， I sat behind him on the pillion， and we roared off into the night.
More recently， scientists have documented an alarmingly high occurrence of frogs with malformations.