unfamiliar

As she walked through the unfamiliar city at night, she kept her phone out to follow the map closely.

(Chinese) 当她在夜晚走在这座陌生的城市时，她一直拿着手机紧盯着地图。

The document was filled with unfamiliar legal jargon that the average person would find impossible to understand.

(Chinese) 这份文件充斥着陌生的法律术语，普通人根本无法理解。