a net gain的用法和样例：
- This is a net gain for the American policy.
- That, say the Americans, would be a net gain for non-proliferation.
- The government loses twenty seats and gained thirty one, make a net gain of eleven.
- The policy results not merely in no net gain, but in a net loss.
- The government lost twenty seats and gained thirty ones,making a net gain of eleven.
a net gain的相关资料：