不分清红皂白 indiscriminately
不敢越雷池一步 dare not go one step beyond the prescribed limit
不可同日而语 cannot be mentioned in the same breath
不入虎穴，焉得虎子 how can you catch tiger cubs without entering the tiger’s lair
蝉噪林愈静，鸟鸣山更幽 The forest is more peaceful while cicadas are chirping
The mountain is more secluded while the birds are singing.
（责任编辑：张梦璇）
（责任编辑:admin）
