4.23

（1）blaze

vi.燃烧，骤然进发

n.烈火，火焰，光辉

eg.Her eyes blazed with anger.

(2)blunder

vi.踉踉跄跄的走，犯错误

n.愚蠢的错误

eg.In the darkness,he blundered into the hall table.

(3)blunt

a.钝的，不锋利的

vt.使变钝

be blunt with sb 对某人直言不讳

Eg.To be quite blunt with you ,I think you are wrong.

（4）boastful

a.自夸的

Eg.He is always boastful of his learning.

(5)brace

n.括号，托架，支架

vt.撑住，支住，使……防备

brace oneself (for sth)  做好准备

Eg.We braced ourselves for a bumpy landing .

(6)bracket

n.括号，托架，等级

vt.把……归类，将……相提并论

bracket A and B  将A和B归为一类

Eg.Most English people bracket American and Canadian accent together.

（7）breach

n.违反，中断，终止

vt.攻破，违反

Eg.She was sued for breach of contract.

(8)brew

vt.酿造，冲泡

brewery  n.啤酒厂

Eg.He brews his own beer at home.

(9)briefing

n.情况介绍会

Eg.Captain Tom gave his men a full briefing.

(10)brink

n.边沿，边缘

at /on the brink of  处于……边缘

Eg.Some experts say that rain forest is already at the brink of collapse.