unfamiliar

adj.

不熟悉的；不常见的；陌生的；没有经验的

1. I saw an unfamiliar face at the door.
   我在门口看到一张不熟悉的面孔。
2. I'm unfamiliar with this type of computer.
   我不熟悉这种类型的计算机。

Navigating in unfamiliar geometric terrain
Unfamiliar face recognition in relatively able autistic children.
Behavioral inhibition to the unfamiliar.
Culture shock. Psychological reactions to unfamiliar environments.
Elements of Good Route Directions in Familiar and Unfamiliar Environments
Elements of Good Route Directions in Familiar and Unfamiliar Environments.
Surprise and sense making: what newcomers experience in entering unfamiliar organizational settings.
Approval and disapproval: infant responsiveness to vocal affect in familiar and unfamiliar languages.
Modifying children's food preferences: the effects of exposure and reward on acceptance of an unfamiliar vegetable
Specific and differential activation of mitogen-activated protein kinase cascades by unfamiliar taste in the insular cortex of the b...