The professor has painstakingly studied how the substance changes at high temperatures.

这位教授费费尽苦心地研究这种物质在高温下的变化。

The salesman painstakingly explained to the customer how to use the appliance.

这位售货员悉心地向顾客解释该电器的使用方法。

The diligent student worked painstakingly on the problems encountered in his studies.

这位勤奋的学生刻苦地钻研学习上遇到的问题。

As with Sisyphus, the boulder was painstakingly rolled upwards only to tumble back down again in an absurd exercise of futility.

和西西弗斯一样，巨石费力地向上滚动，结果又滚了下来，徒劳无功。

Broken bones were painstakingly pieced together and reshaped.

断裂的骨头被十分小心地拼凑到一起重新成形。

The cause they contrived so painstakingly also ended in failure.

他们惨淡经营的事业也以失败而告终。

The garment store they so painstakingly built up also ended in failure.

他们苦心经营的服装商店也以失败而告终。

Read painstakingly through your interview notes.

仔细阅读采访笔记。