该系统旨在高效处理任何商业交易。

The system is designed to handle any business ___transaction efficiently.

外汇柜台上的每一笔交易似乎都要花很长时间。

Each ___transaction at the foreign exchange counter seems to take forever.

我们密切监控小额交易以识别趋势。

We closely monitor the ___transaction of smaller deals to identify trends.