concentration

US /ˌkɑːn.sənˈtreɪ.ʃən/
UK /ˌkɑːn.sənˈtreɪ.ʃən/
"concentration" picture
1.

專注, 集中

the action or power of focusing one's attention or mental effort

:
He needs to improve his concentration during studies.
他需要提高學習時的專注力
Loud noises can disrupt your concentration.
嘈雜的聲音會分散你的注意力
2.

濃度, 含量

the amount of a substance in a given volume or area

:
The high concentration of salt in the water made it undrinkable.
水中高濃度的鹽使其無法飲用。
The air pollution concentration has reached dangerous levels.
空氣污染濃度已達到危險水平。
3.

集中, 集結

a mass or collection of something

:
There was a large concentration of troops near the border.
邊境附近有大量部隊集結
The city has a high concentration of tech companies.
該市擁有高度集中的科技公司。