空谷足音
lit. the sound of footsteps in a deserted valley (idiom); fig. sth hard to come by; sth wonderful and rare
词频 1.1
含义
- lit. the sound of footsteps in a deserted valley (idiom)
- fig. sth hard to come by; sth wonderful and rare
lit. the sound of footsteps in a deserted valley (idiom); fig. sth hard to come by; sth wonderful and rare
词频 1.1