词汇学习及其问题

1. corpse，尸体，好像在新闻里很少听到。更多的是用一个human remains之类的词。谁能给详细说一下？

2. If you conceal something, you cover it or hide it carefully.

3. Something that is dismal is sad and depressing, especially in appearance.

4. If a woman is frigid, she finds it difficult to become sexually aroused. You can often use frigid to show disapproval.好像这个含义在生活中见到得更多。