In the midst of sth (idiom)
●if you are in the midst of an event or situation, it is happening around you.（在…之中）
1.The government is in the midst of a major crisis.
2.We are in the midst of the worst recession in a decade.
Turn back (phrasal verb)
●To return the same way that you came instead of continuing on your journey, or to make someone do this.（往回走，走回頭路）
1.Bad weather forced them to turn back.
2.Refugees who reach the border may be turned back.
Stick to sth (phrasal verb)
●To do something that you promised or decided you would do, or that you believe you should do.
1.We'd better stick to the main road, because the other roads are blocked with snow.
2.We said we'd give her the cash, and we must stick to our agreement.
A variety of sth (phrase)
●A lot of things of the same type that are different from each other in some way.
1.She does a variety of fitness activities.
2.Society is made up of a variety of people; some are good, others (are) bad, and still others (are) in between.
●Based or operating abroad.
1.Needless to say, the use of offshore centres is never far from being a controversial matter.
2.The island offers a wide range of offshore banking facilities.