慢速英语:Water on Mars: What Does It Mean?

音频下载[点击右键另存为]

1. atmosphere n.气氛; 大气层; 大气
例句：Aerosols are present throughout the atmosphere.
气溶胶存在于整个大气层。

2. principal adj.主要的; 本金的; 最重要的
例句：Drinking is a principal cause of traffic accidents.
酗酒是交通事故的主要原因。

3. carve vi.雕刻; 切，切开
例句：Would you like to carve?
你喜欢切片吃吗？

4. liquid adj. 液体的; 清澈的
例句：Transfers of liquid cultures can also be made by pipette.
移植液体培养物可采用吸管。

5. reasonable adj.合理的，公道的
例句：At the time, what he'd done had seemed reasonable.
那时他的所作所为似乎很合理。

6. imagine vt.想像; 想，设想
例句：Imagine a house with a big garden.
设想有一所带大花园的房子.