Trace element mixes serve as insurances.微量元素只是作为一种保障措施.First of all, some doctors don't participate in some insurances by definition.首先, 一些医生 肯定 不会参加某些保险.These five kinds of insurances all exist the certain problem....
放学后我带孩子们去公园野餐。I took the kids for a picnic in the park after school.他们正在收拾野餐后剩下的东西。They were tidying up the remains of their picnic.我们乘坐平底长船溯河而上到格兰切斯特，在草地上举行野餐。We punted up towards Grantchester and had a picnic in a mead...
The club specialises in videoing its student golfers to correct their faults.俱乐部专门为高尔夫学员制作录像，以纠正他们的错误。She had been videoing the highlights of the tournament.她一直在制作锦标赛集锦的录像。...