This is the 19493rd most frequent Korean word.
약화시키다
"To weaken"
약화시키다 here is used to indicate the process of deterioration or weakening of an economic entity due to external conditions.
경제 불황이 국가의 경제력을 약화시켰다.
The economic downturn has weakened the nation's economic power.
약화시키다 in this sentence is used to describe the potential effect on a biological system resulting from an action or activity.
무리한 운동은 면역 체계를 약화시킬 수 있습니다.
Excessive exercise can weaken the immune system.
약화시키다 here reflects the damaging impact on a natural system caused by harmful factors like pollution.