in written form, especially as proof of an agreement or grievance
以书面形式（尤指作为同意或申诉证明）
he asked them to put their complaints in writing.
他要求他们以书面形式提出投诉。
there are clear signs that something unpleasant or unwelcome is going to happen
厄运将至
the writing was on the wall for the old system.
旧制度的厄运将至。