Semioctave
半倍频程
🗣️ 情景例句
Thanksgiving was about the Pilgrims,
感恩节是关于清教徒的，
To come out of hibernation
从冬眠中醒来
This echo-location in bats is often compared with radar, the principle of which is similar.
蝙蝠这种回声定位常常可与雷达相比较，其原理是相似的。