1.back and forth来回往返

He and colleagues have shuttled back and forth between the three capitals.
他和同事们在这3个首都之间往来穿梭]hhP|[Owm~w9j.u@。

2.pick up学习

Where did you pick up your English?...
你在哪儿学的英语？

3.lead to导致

A lack of prudence may lead to financial problems.
不够谨慎可能会导致财政上出现问题r%(e^ky%;W(PhyGyPc。

译文由可可原创，仅供学习交流使用，未经许可请勿转载G~!#He_!dmK;Nu。