'd

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'd
abbr.
1. =would
2. =had
- 英语>简体中文, 英汉大词典
'd
NONE(无词性)
1. Had: Had:
- He'd already left. 他已经离开了
2. Would; should: Would;Should:
- I'd rather walk than drive. 我宁愿步行也不愿乘车
3. Did: Did:
- Who'd you ask? 你问过谁了?

D1
NONE(无词性)
1. The symbol for the isotope deuterium. 氘的化学符号:同位素氘的符号
2. Also d The symbol for the Roman numeral 500. 也作 d 五百:代表罗马数字500的符号

D2
abbr.(略语)
Democrat, democratic. Democrat, democratic.

D-
NONE(无词性)
In biochemistry, a symbol used as a prefix to indicate the spatial configuration of certain organic compounds with asymmetric carbon atoms. It is used if an organic compound has a configuration about an asymmetric carbon atom analogous to that of D-glyceraldehyde (the arbitrarily chosen standard), in which the hydroxy (OH) functional group is on the right side of the asymmetric carbon atom. D-构型:在生物化学上的一个象征符号,用做前缀来指出某些有不对称碳原子的生物化合物的空间结构。它的使用是当一个生物化合物含有类似D甘油醛(任意被选择的标准)的不对称碳原子结构,其中的氧(OH)功能组就会在不对称碳原子的右边
- 英语>简体中文, 美国传统词典
'd1
[口]
had, would [should]的缩略形式, 如: you'd (=you had) better go. I'd (=I would) like to go.
助动词did的缩略形式, 如:Where'd (=Where did) you go yesterday?
=ed, 如:foster'd
英语>简体中文, 现代英汉综合大辞典
D
/diː/
(also d)
(D's, d's)
有变体名词 D is the fourth letter of the English alphabet. 英文字母表中的第4个字母
英语>简体中文, 高级英汉双解词典