"by virtue of sth."​ 是一个正式的表达，意思是 “凭借，由于，因为”，用来解释某事发生或某人拥有某物的原因、资格或依据，尤其指凭借某种身份、权力、特点或事实。 可以理解为“借助于……的优势/性质”。 例句： He was granted access to the confidential files by virtue of​ his position as director. 凭借他作为主任的职务，他被授权查阅机密文件。 The small island attracts many tourists by virtue of​ its beautiful beaches and clear water. 这个小岛凭借其美丽的海滩和清澈的海水吸引了许多游客。