| 主要翻译 |
twenty-one,
21 nnoun: Refers to person, place, thing, quality, etc. | (cardinal number: 21) (基数) | 二十一，21
|
| | Twenty-one comes before twenty-two. |
| | 二十一后跟着二十二。 |
twenty-one,
21 adjadjective: Describes a noun or pronoun--for example, "a tall girl," "an interesting book," "a big house." | (21 years of age) | 二十一岁的
èr shí yī suì de |
| | In many states of the US, you must be twenty-one to buy alcohol. |
| | 在美国的许多州，你必须年满二十一岁，才能购买酒精饮品。 |
| twenty-one adjadjective: Describes a noun or pronoun--for example, "a tall girl," "an interesting book," "a big house." | (21: of [sth]) | 二十一（个）的
èr shí yī gè de |
| | Yesterday I saw twenty-one birds in the tree in my backyard. |
twenty-one,
21 pronpronoun: Replaces noun--for example, "He took the cookie and ate it." "I saw you yesterday." | (people, things: 21 of them) | 21 人
|
| | | 21 个
|
| 21 nnoun: Refers to person, place, thing, quality, etc. | US, written (twenty-first day of specified month) (日期) | 21 日，21 号
|
| | The heads of state are meeting to discuss this issue on March 21. |
| 21 nnoun: Refers to person, place, thing, quality, etc. | mainly UK, written (twenty-first day of specified month) (日期) | 21 日，21 号
|
| | I finish work on 21 December and will be on holiday for two weeks. |