ignorant of make nothing of cannot make heads or tails of it had no ear for be ill grounded in
ignorant of
make nothing of
不懂世故用英文怎么说
不懂事用英文怎么说
不懂人事用英文怎么说
不懂什么意思用英文怎么说
不懂就问用英文怎么说
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