New words：
sufferable ['sʌfərəbəl] adj. 可容忍的；可忍受的；可忍耐的
insufferable [in'sʌfərəbl] adj. 难以忍受的；难以容忍的
Sample Sentences：
In her eyes, the naughty boy was an insufferable student.
Last summer, the air conditioner was out of service and the heat was insufferable.
air conditioner 空调
New words：
suffer ['sʌfər] v.遭受；蒙受；受难；忍受
suffer from 受害于；受折磨；遭受；患病；受…之苦
Sample Sentences：
She couldn't suffer criticism.
I cannot suffer such rudeness.
I hate to see animals suffering.
He suffered nobody to touch his flower.
My father suffers from high blood pressure.
He is suffering from the loss of his old friend.
loss [lɔs] n.损失；丢失；亏损；丧失
criticism ['kriti.sizəm] n.批评；批判；评论；指责
New words：
internal [ɪnˈtɜːrnl] adj. 内心的；内部的；里面的；体内的；本身的
internal injury 内伤
Sample Sentences：
The medicine is not for internal use.
He suffered internal injuries in an accident.
He is talking to Tom on the internal telephone.
suffer ['sʌfər] v.遭受；蒙受；受难；忍受
New words：
obstacle ['ɔbstəkl] n. 障碍；障碍物；阻碍；绊脚石
Sample Sentences：
To succeed, you must learn to overcome obstacles.
The biggest obstacle that we all face is our own internal fear.
Most competition cars will only roll over if they hit an obstacle.
internal [ɪnˈtɜːrnl] adj. 内心的；内部的；里面的；体内的；本身的
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