Pilot (verb)
●To test a new idea, product, etc. on people to find out whether it will be successful.(試驗,試行)
Examples:
1.The new exams are currently being piloted in a number of areas.
2.The scheme is being piloted by a few councils with a view to extending it nationwide.
Back and forth (idiom)
●Moving first in one direction and then in the opposite one.(來回)
Examples:
1.We travel back and forth all the time between Canada and England.
2.She swayed gently back and forth to the music.
Bring in sth (phrasal verb)
●To introduce a new law or system.
(引入,引進)
Examples:
1.She said the government would bring in the necessary legislation to deal with the problem.
2.New safety regulations have been brought in.
A false alarm (phrase)
●A warning of something, especially something unpleasant or dangerous, which does not in fact happen.
(假警報,虛驚)
Examples:
1.They thought the packet contained a bomb but it was a false alarm.
2.Three fire engines rushed to the school only to discover it was a false alarm.
Stay in touch (with sb) (idiom)
●To maintain contact with another person, especially at intervals so as to remain up to date with each others activities.(保持聯繫)
Examples:
1.We have stayed in touch, often meeting for coffee.
2.My old high school friends and I tried staying in touch after we graduated, but we all started drifting apart once college got underway.