内敛的英文：
reserved
introverted

参考例句：

He was unemotional, quite quiet, and reserved.
他感情淡漠，沉默寡言，性格内敛。

His natural reserve made him appear self-conscious.
他天生的内敛性格让他显得有些拘谨。

Let the world's sharpness like a clasping knife;Shut in upon itself and do no harm
让世界象一把摺刀，把它的锋芒;在自身内敛藏，埋进在爱情的

reserved是什么意思：
adj. 缄默的；矜持的；保留的；预订的

reserve decision
推迟判决

For example,hotel reservation,ticket reservation,restaurant reservation and so on.
比如说，旅馆预订，票子预订，餐厅预订等。

They have reserved a box for us in the theatre.
他们在剧院为我们预订了一个包厢。

Do you have the reserved seats yet?
还有可预订的座吗？

RNR (Royal Naval Reserve)
皇家海军后备队

introverted是什么意思：
adj. 内向的
v. introvert的过去式和过去分词；使...内向

Are you an extrovert or an introvert?
你的性格内向还是外向？

She has a calm and introverted disposition.
她性格文静内向。

Machen was a lonely, introverted child.
梅琴是个孤僻内向的孩子。

Shyness has nothing to do with being an introvert.
害羞和这个人是不是内向者一点关系都没有。

The music students here are a very introvert lot.
这里学音乐的学生都非常不爱交际。