New words：

drift [drift]
v.漂移；漂流；飘；缓缓移动
n.趋势；漂流；趋势

iceberg ['aisbə:g] n. 冰山

Sample Sentences：

Clouds drifted across the sky.
I'm sorry, I got bored and drifted off.
There was a drift of smoke above the trees.
Most of the iceberg is under the water.
The Titanic sank after hitting an iceberg in the early morning hours of April 15, 1912.

标签: none