1. 浓缩的
A concentrated liquid has been increased in strength by having water removed from it.

2. （活动）集中的，密集的
A concentrated activity is directed with great intensity in one place.

1. gathered together or made less diffuse

e.g. their concentrated efforts
his concentrated attention
concentrated study
a narrow thread of concentrated ore

2. of or relating to a solution whose dilution has been reduced

3. being the most concentrated solution possible at a given temperature
unable to dissolve still more of a substance

e.g. a saturated solution

Synonym: saturated

4. (of light) transmitted directly from a pointed light source

Synonym: hard

5. intensely focused

e.g. her concentrated passion held them at bay