currently可以放在句首。

currently：adv.现时;目前;当前;时下

相关介绍

例句：

Currently, over 500 students are enrolled on the course.

目前有500多名学生注册学习这门课程。

We are currently seeking new ways of expanding our membership.

目前，我们正探索发展会员的新途径。

The ratio of applications to available places currently stands at 100:1.

目前，申请人数和就业岗位的比例为100:1。

This matter is currently being discussed.

这个问题现正在讨论之中。