1.on average 平均
例句：On average, people in this country earn $50,000 per year.
这个国家的人平均每年挣50,000美元。
例句：On condition that you finish your homework, you can go out to play.
条件是你完成作业，你就可以出去玩。
3.on duty 值班;在上班
例句：I'm on duty today, so I can't go out with you.
我今天值班，所以不能和你一起出去。
4.in a hurry 匆忙地
例句：He was in a hurry to get to the airport, but he still managed to stop for coffee.
他匆忙赶往机场，但仍然停下来喝了杯咖啡。
5.in a sense 在某种意义上
例句：In a sense, the company's success is due to the hard work of its employees.
从某种意义上说，公司的成功归功于员工的辛勤工作。
6.so far 到目前为止
例句：So far, the project has been going well.
到目前为止，这个项目进展顺利。
7.on fire 非常生气;非常热烈
例句：The meeting was on fire with excitement and enthusiasm.
会议气氛非常热烈，充满了激动和热情。
8.on the one hand 一方面
例句：On the one hand, the company is making a lot of money, but on the other hand, it's also facing many challenges.
一方面，公司赚了很多钱，但另一方面，它也面临着许多挑战。
9.in a blink of an eye 转瞬间;一眨眼间
例句：In a blink of an eye, the year has passed and it's time to reflect on what we've achieved.
转瞬间，一年过去了，是时候反思我们取得的成就了。
10.in a flash 瞬间;一刹那间
例句：In a flash, the memories of my childhood came flooding back.
一刹那间，我童年的记忆涌上心头。
11.so far so good 到目前为止一切顺利
例句：So far, so good. The project is progressing well and we're ahead of schedule.
到目前为止一切顺利，项目进展顺利，我们提前完成了进度。
12.so to speak 可以说;可以说得上
例句：He's the smartest person I know, so to speak.
可以说，他是我认识的最聪明的人。
13.on the contrary 相反
例句：On the contrary, I think your idea is quite brilliant.
相反，我认为你的想法非常棒。
14.in a word 总的来说;一言以蔽之
例句：In a word, we had a successful trip.
总的来说，我们的旅行很成功。
15.in case 以防;万一
例句：In case you forget your password, don't worry, we can help you retrieve it.
万一你忘记了密码，不用担心，我们可以帮你找回。
16.so far so good 到目前为止一切顺利
例句：So far, so good. The project is progressing well and we're ahead of schedule.
到目前为止一切顺利，项目进展顺利，我们提前完成了进度。
17.so to speak 可以说;可以说得上
例句：He's the smartest person I know, so to speak.
可以说，他是我认识的最聪明的人。
18.on the one hand 一方面
例句：On the one hand, I love the city life, but on the other hand, I miss the quietness of the countryside.
一方面，我喜欢城市生活，但另一方面，我又怀念乡村的宁静。
19.in a sense 在某种意义上
例句：In a sense, the company's success is due to the hard work of its employees.
从某种意义上说，公司的成功归功于员工的辛勤工作。
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