The 'taxi' is a small Swiss aeroplane called a 'Pilatus Porter'.

这辆“出租汽车”是一架小型瑞士飞机，叫“皮勒特斯.波特“号。

Being betrothed means she wears the insignia of betrothal: engagement rings and all the gifts Pilatus has given her—jewels, earrings, necklaces, and the pendants.

订婚戒指和所有Philatus送她的礼物——珠宝、耳环、项链、和吊坠。