Beaufort scale

Beaufort scale
/ˌbəufət ˈskeɪl; ˌbofɚt `skel/ scale
for measuring wind speed ranging originally from 0 (calm) to 12 (hurricane) 蒲福风级（最初将风速划分为由0-12即由无风到飓风的等级）
    registering 8 on the Beaufort scale 风力为8级.

牛津英汉双解词典