D-n
[医]dextrose nitrogen ratio 葡萄糖氮比率，糖氮比率
🗣️ 情景例句
Everyone gets a turn, going counterclockwise,
每一个人按逆时针方向，
OFF. It gets dark.
断开开关，它就会熄灭。
He did a lot of research and travelled around the USA looking for information about his ancestors.
他做了大量的研究，在美国跑了许多地方，了解有关祖先的情况。