a: i have to an operation, a valve in my heart is broken.

b: that sounds serious.

valve

n. 1。阀，活门；2。（心脏的）瓣膜，（管乐器的）活瓣

a: you have been looking into that mirror for half an hour.

b: i am just practicing my vanity.

vanity

n. 1。自负，自大，虚荣；2。空虚，无用，无价值

a: have you finished painting the door?

b: yes, now all it needs is a varnish.

varnish

n. 1。清漆，罩光漆，凡立水；2。光泽，光泽的表面

vt. 1。给……涂清漆，使光亮；2。粉饰，文饰，掩饰(over)

a: do you have a vase of the flowers?

b: no, will this bottle do?