self-conscious
/ˌself ˈkɔnʃəs; `sɛlf`kɑnʃəs/ adj
1 seemingnervous or unnatural because one is worried about other people's opinions or reactions （因顾虑他人的看法或反应）忸怩的, 不自然的
a ,self-conscious `smile 局促不安的微笑
be self-conscious about one's appearance 对自己的外貌很在意.
2 aware of one's own existence, thoughts and actions （对自己的存在、 思想和行为）自觉的.