Think though:彻底想清楚
You must think it through before you take any action.
在采取任何行动之前,你必须仔细想清楚.

Have in mind:想要,想到

Work through:干完

come to an agreement:达成一致

Take care of: 处理
Better devices are needed in many countries to take care of the waste from factories.
很多国家需要更先进的装置来处理工业废物.