joining fee

money needed to gain entry, or membership, to an event or an organisation.

日本語の意味

入会金 / 加盟金 / 参加料

Before you can use the facilities, you must pay a one-time joining fee.

施設を利用するには、まず一度限りの入会金を支払う必要があります。

意味（1）

money needed to gain entry, or membership, to an event or an organisation.

joining fees

（ plural ）