重點講解:
1. block up (使)封閉;(使)堵住;(使)封死;
例句:'Any holes in the kitchen where the mice are getting through?' – 'I've blocked them up.'
“廚房里還有沒有老鼠洞?”——“我已經把它們堵死了 。”
2. at the expense of 以…為代價;
例句:He finished the job at the expense of his health.
他以自己的健康為代價完成了工作 。
3. be good for 有利的;有益的;
例句:Cereal products are good for our health.
谷物產品對我們的身體有益 。
4. figure out 想出;理解;弄清;
例句:They might have figured out this riddle by now.
他們現在也許已經解開這個謎了 。
n. 謎,謎語
vt. 解謎,出謎題,充滿,打