D
英 [əd]
美 [əd]
- n. 字母D
星级词汇:
英语词源
- D
- fourth letter of the Roman alphabet, from Greek delta, from Phoenician and Hebrew daleth, pausal form of deleth "door," so called from its shape. The sign for "500" in Roman numerals. 3-D for "three-dimensional" is attested from 1952.
权威例句
- 1. Butter, margarine, and oily fish are all good sources of vitamin D.
- 黄油、人造黄油和多脂鱼都含有丰富的维生素D。
- 2. In figure 24 "D" denotes quantity demanded and "S" denotes quantity supplied.
- 在图24中，D代表需求量而S代表供应量。
- 3. Milk, oily fish and egg all contain vitamin D.
- 牛奶、油性鱼类和鸡蛋都含有维生素D.
- 4. This special form of vitamin D is naturally present in breast milk.
- 这种特殊形态的维生素D天然存在于母乳中。
- 5. I got a D+.
- 我得了个D+。
相关单词
广而告之
1一秒钟记单词小学英语单词记背神器英语一二三四五六年级人教版英语词汇汇总表单词记背神器 单词记忆书单词词汇速记强化训练
【推荐理由】赠运费险，热门商品
【现价】27.9
【下单链接】38￥ CZ3457 5OArdvEMFvn￥