The letter was written in her usual acerbic style.
这封信是用她惯常的尖刻语调写的。
📖 牛津释义
written
adj (to be) expressed in writing, rather than in speech 书面的(非口头的)
a written examination, request, message 笔试、 书面请求、 书面信息
a written confirmation, agreement, evidence 书面的确认、 协议、 证据. the ,written `word language expressed in writing 书面语言. written => write.