unfamiliar
例子
The unfamiliar language spoken by the locals made it difficult for her to communicate.
当地人说的不熟悉的语言使她难以沟通。
Walking down the dark alley at night felt unsettling and unfamiliar.
夜晚走在黑暗的小巷里感觉不安和陌生。
例子
She felt unfamiliar with the subject, having never studied it before.
她对这门学科感到陌生，因为以前从未学过。
The new employee was unfamiliar with the company's policies and procedures.
新员工对公司的政策和程序不熟悉。
