重點講解：
1. in an attempt to do sth. 嘗試，試圖（尤指做困難的事）；
例句：He cut desperately at the rope in an attempt to free his foot.
他拼命砍繩子，試圖把自己的腳解脫開(LUOF6lX!cB)。
2. put to sleep 使（尤指有病或有傷的動物）無痛苦地死去；使長眠；
例句：I'm going take the dog down to the vet's and have her put to sleep.
我要把小狗帶到獸醫那里，讓她安樂死o|5-)RoL*1Bc。
3. on average 平均起來；按平均值；
例句：These parcels weigh two pounds on average.
這些小包裹平均重兩磅[6oKO7MB8=bBR!E%Li。
4. lead to 招致；致使；導致；
例句：Various strokes of misfortune led to his ruin.
他遭諸多不幸而一蹶不振[,]VX~Iw+KpL;z,S~。
5. be close to 近的；接近的；
例句：Her comment was uncomfortably close to the truth.
她的評論逼近真相，令人局促不安IZnXhauW;sCT(#c8f+Qz。