Dicalcium
[医] 二钙
🗣️ 情景例句
OK. I'll be back in a few minutes.
好，过几分钟我就回来。
May I borrow your book?
我能借你的书吗？
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。