unexpressive
美 [ˌʌnɪk'spresɪv]
英 ['ʌnɪks'presɪv] 
- adj.未能表达原意的;无表情的;沉默的;不可表达的
- 网络没表情的;力和深远意义
英汉解释
例句
Meanwhile, Well-designed Worksheets methodology doesn't care enough to those students who are introversive and unexpressive.
同时“学案助学”教学法对那些性格内向,不喜欢表现的学生关注度不够。