Admittance is the act of entering a place or institution or the right to enter it. 进入; 进入权
noun [具体名词] 进入许可，加入许可；（物理）导纳；通道
There is no admittance without a security pass. 无保安通行证不得入内。
来自admit (容许) + tance → 入场许可
There is no admittance without a security pass. 无保安通行证不得入内。