New words：

setback ['setbæk] n. 挫折；阻碍

Sample Sentences：

No setbacks can make him waver.
The patient had a setback in her recovery.
It's just a minor setback, a part of living, no big deal!

waver ['weivər] v.动摇；颤抖；犹豫不决
minor ['mainə] adj.轻微的；较小的；次要的

New words：

discourage [dis'kʌridʒ] v.阻止；劝阻；使泄气；使灰心；阻拦；使丧失信心

Sample Sentences：

She was discouraged by setbacks.
The rain discouraged us from going out.
I was never discouraged against learning English.
He is easily discouraged by difficulties and obstacles.

setback ['setbæk] n. 挫折；阻碍
obstacle ['ɔbstəkl] n. 障碍；障碍物；阻碍；绊脚石

New words：

after all 毕竟；终究

Sample Sentences：

Don' t get discouraged, you are new to the work after all.
After all, 15 minutes of exercise is better than nothing.
Don't blame him for breaking that vase; he is a child after all.

discourage [dis'kʌridʒ] v.阻止；劝阻；使泄气；使灰心；阻拦；使丧失信心

New words：

region ['ri:dʒən] n. 地区；区域；行政区

Sample Sentences：

No new SARS cases have been reported in the region.
Most of the countries in the region have unstable economies.
I guess there are much less people in the Arctic regions than here.

unstable ['ʌn'steibl] adj.不稳定的；易变的

New words：

scratch [skrætʃ]
v.划伤；挠；划破；刮坏
n.划伤；搔痒；刮（或擦、抓）的刺耳声；挠痒

Sample Sentences：

He pretended to scratch his ear.
His arms were scratched by thorns.
The cat scratched a hole in the ground.
He scratched his name on the wall with a knife.
He fell into a thorn bush and was covered with scratches.