Tkn
[医][=total kjeldahl nitrogen]总克氏氮
🗣️ 情景例句
Yeah,
是啊。
Though the wound be healed yet a scar remains.
创伤可愈合，伤疤犹留存。
Professor Ronald Bracewell, a leading American radio astronomer,argued in Nature that such a superior civilization, on a visit to our own solar system,
假如有如此高级文明生命访问了我们的太阳系，