未减轻的 meaning in English

unabated
unallayed
unmitigated
unrelieved

Chins is confronted with the objective reality that birth population quality is slightly lower than normal while pressure of population quantity on society has not been lessened , which seriously restricts the improvement of integrated population quality
在庞大的人口数量压力还未减轻的同时，又面临着出生人口素质偏低的客现现实，严重制约了我国整体人口素质的提高。