Rmcc
罗兰德.麦克唐纳儿童慈善机构
🗣️ 情景例句
Tom, is that you?
汤姆，是你吗？
John has his own family now.
约翰现在有自己的家了。
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。