The property can only be viewed by appointment.

只有预约方可察看这处房产。

He will only see visitors by appointment.

他只根据预约会客。

Consultations can be arranged at other times by appointment.

磋商可以通过预约安排在其他时间。

Viewing is by appointment only.

参观须预约。

We will see you by appointment.

我们将按时赴约。