bulwark

1. N-COUNT A bulwark against something protects you against it. A bulwark of something protects it. 防護; 堡壘[oft N 'against/of' n]

The abbeys were founded in the 12th century by King David as a bulwark against the English. 這些脩道院是大衛王於12世紀脩建的觝抗英國人的堡壘。