1. Li emphasized that no sovereign country will sit idly by with separatist activities, and no responsible government could ignore the danger surrounding its people.
2. sit idly
2. " He's not one to sit idly by, " Kahan said.
3. The economic implications are so heavy that we cannot sit idly by and watch the political relations between China and Japan continue to freefall.
4. The Chinese government will not sit idly by watching its territorial sovereignty being infringed upon.