D
[计] 数据, 十进制, 数位, 位, 文档, 域\\n[医] 氘, 重氢
📖 牛津释义
D
abbr 缩写 = (US politics 政) Democrat; Democratic. Cf 参看 R 3. D (also d), symb 符号 Roman numeral for 500 罗马数字的500. Cf 参看 D-day. d abbr 缩写 =
1 (in former British currency 英国旧币) penny; pennies or pence (Latin denarius; denarii) 便士（源自拉丁文denarius; denarii）
a 2d stamp 一张2便士的邮票
6d each 每个6便士. Cf 参看 p 2.
2 died: Emily Jane Clifton d 1865 埃米莉?简?克利夫顿, 1865年卒. Cf 参看 b.
🏥 医学释义
①氘，重氢 ②密度
🗣️ 情景例句
I think you are getting off the subject. Could we get back to the main point, please?
我觉得你跑题了。 我们能不能回到主题上来？
If y ou lose your job I'll lose mine, so we're in the same boat.
如果你失去工作，我也会失去的，所以我们处境相同。
it requires 97 per cent less energy to travel the quarter of a million miles from the Moon to Earth-orbit than the 200 mile-journey from Earth's surface into orbit!
因此，从月球到地球的25万英里所消耗的能量要比从地球表面进入地球轨道的200英里所耗能量少97%。