I.单词
1.abstract adj.
existing in thought or as an idea but not having a physical or practical existence;
hard to understand n. abstract idea or quality;
short account of the contents of a book
v.
abstract sth(from sth): remove sth;
separate sth(from sth);
make written summary of in the abstract
=in genera
=in a theoretical way
大体上,理论上,抽象地
1) We will consider this problem in the abstract.
2) They abstracted metal from ore.
3) Could you make the abstract idea more clear?