1. The academics were able to analyse how much time the employees spent in “collaboration hours”, defined as various types of meetings, and how much time they had as “focus hours”, uninterrupted by calls or emails, where they could concentrate on their tasks.

concentrate on 專心于

Water companies should concentrate on reducing waste instead of building new reservoirs

自來水公司應該集中精力減少水浪費，而不是修建新水庫xqq4Tdg*PXk4。

2. Instead, all their extra time was taken up by meetings.

take up 占用，花費(時間、空間或精力)

I know how busy you must be and naturally I wouldn't want to take up too much of your time.

我知道您肯定特別忙，我當然不想占用您太多的時間RI0(,oJ_IU。