set against 1. 用…抵消，从…中减去 Certain business losses can be set (off) against taxes. 部分营业亏损可因少付税款而得到补偿。 2. 把…和…作比较 The advantages must be set against the disadvantages. 必须权衡利弊。 3. 使反对；使敌视 They set his friends against him. 他们使他的朋友们反对他。 His parents are very much set against the marriage. 他的父母竭力反对这门婚事。