短线duǎnxiàn短的线{short line};〈比喻fig.〉(产品、专业等)需求量超过供应量(跟‘长线’相对as opposed to ‘excessive supply’}){(of products, specialties, etc.) be in short supply}: 增加～材料的生产{increase the output of materials that are in short supply}|扩大～专业的招生名额。{enroll more students of the specialities that are short in supply}