He gave an involuntary smile.
他不由自主
笑了一下。
做出
;非故, 志愿;, ;
;法管束;;;
;,心,;;He gave an involuntary smile.
他不由自主笑了一下。
Meg gave an involuntary exclamation.
梅格不由自主叫了起来。
When viewed from a microscope, there is no striation presented in the muscle, and moreover, since it is no controlled by our willpower, it is called involuntary, nonstriated muscle.
从纤维镜下观察，平滑肌
横纹状结构，平滑肌不随人
志收缩，故称不随肌非横纹肌。
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