1. 准许进入；准许加入；进入；加入
    Admission is permission given to a person to enter a place, or permission given to a country to enter an organization. Admission is also the act of entering a place.

    e.g. Students apply for admission to a particular college...
           学生们申请上某所大学。
    e.g. Poland and Czechoslovakia have vigorously pursued admission to the European Community...
           波兰和捷克斯洛伐克已经积极寻求加入欧共体。

2. 获准入学者
    Admissions to a place such as a school or university are the people who are allowed to enter or join it.

admission的反义词

    e.g. Each school sets its own admissions policy.
           每所学校制定各自的录取政策。

3. 入场费；门票费
    Admission at a park, museum, or other place is the amount of money that you pay to enter it.

admission的解释

    e.g. Gates open at 10.30am and admission is free.
           早上10:30开门，免费入场。

4. （对过错等的）承认，供认
    An admission is a statement that something bad, unpleasant, or embarrassing is true.

    e.g. By his own admission, he is not playing well...
           他自己承认表现欠佳。
    e.g. She wanted some admission of guilt from her father.
           她期待她父亲能够认罪。