Samocycline
水霉素钙
🗣️ 情景例句
Nobody. That's the problem.
没有人。这就是问题所在。
He has a pair of gloves.
他有一副手套。
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。