2、drowsy adj.昏昏欲睡的
After a few minutes, you'll probably get drowsy and fall asleep.

3、avid adj.急切的
She was an avid runner, 30 miles a week.

4、lethel n.致死因子 adj.致死的
A catalohue of negligence caused Brazil's most lethal fire for more than 50 years.

5、fragmentation n.破碎的，分裂的
The policy might also help to combat the financial fragmentation of the euro zone.