1、turn off
驶离，离开（…路);转弯;拐入旁路
The truck turned off the main road along the gravelly track which led to the farm.
卡车驶离大路，沿着通向农场的碎石小道行进。
He turned off only to find he was trapped in a town square with no easy exit.
他转入岔路，却发现自己困在了一个难觅出口的市镇广场。
关上;关掉；截断，切断（…的供应）
The light's a bit too harsh. You can turn it off.
灯光有点太刺眼了。你可以把灯关掉。
I have to get up and turn off the radio.
我必须起床关上收音机。
使丧失兴趣
What turns teenagers off science and technology?
是什么使青少年对科学技术丧失了兴趣？
Teaching off a blackboard is boring, and undoubtedly turns people off.
照本宣科枯燥乏味，无疑会使人们丧失学习兴趣。
2、discover
发现(以前不知道的事实)
She discovered that they'd escaped.
她发现他们已经逃跑了。
I discovered I was pregnant.
我发现自己怀孕了。
(第一个)发现
the first European to discover America.
第一个发现美洲大陆的欧洲人
In the 19th century, gold was discovered in California.
19 世纪时，在加利福尼亚发现了金子。
初次接触(某活动并乐在其中)
I wish I'd discovered photography when I was younger.
我要是早点接触到摄影技术就好了。
Discover the delights and luxury of a private yacht.
体验私人游艇的乐趣和奢华。