
5.有名無實 a poor apology
The man you've just mentioned is but a poor apology for a writer. His writings are tedious.
你剛才提到的那個作家不過是個有名無實的人。他的作品太沒意思了。
6.絞盡腦汁 to rack one's brain
He had racked his brain, but hadn't been able to work out the answer to the problem.
他已經絞盡腦汁了,可是仍未找到問題的答案。