沉吟的英文：
mutter to self

参考例句：

Wu Sun-fu, who had been deep in thought, stroking his chin absent-mindedly, glanced up at Sun Chi-jen
吴荪甫摸着下巴沉吟，看了孙吉人一眼。

mutter是什么意思：
n. 咕哝；喃喃低语
v. 咕哝；喃喃自语

An indistinct, whispered, or confidential complaint; a mutter.
咕哝不清楚的、小声的或者偷偷的抱怨；嘟哝

He mutter a few words of apology and with that he leave.
他支支吾吾地道个歉就马上走了。

He began to howl and diminuendoed down to a mutter.
他始而大喊大叫，后来声音减低到小声咕哝。

He began to howl and diminuendoed down to a mutter .
他始而大喊大叫，后来声音减低到小声咕哝。

Sarah was muttering away to herself as she did the washing-up
萨拉一边洗碗碟一边独自咕哝个没完

self是什么意思：
n. 自己，自我；本质；私心
v. （使）自花授精

Is self forgiveness just another form of self indulgence?
自我宽恕是放纵自我的另一种表现形式么？

Self - confidence and self - reliance are the mainstay of a strong character.
自信加自强，强者之脊梁。

self loading truck
自动装卸式载重汽车

A friend is a second self.
朋友是第二之自我。

Greece must have a system if it is to become a self supporting and self respecting democracy
要想成为一个自立、自尊的民主国家，希腊必须有一个健全的体制。