have a nodding acquaintance with1 KNOW somethingto know a little about a subject but not a lot (对某事)略知一二 Students will need to have a nodding acquaintance with Spanish. 学生们将需要粗通西班牙语。
→ have a nodding acquaintance (with something) at nod1(1)
2 (also be on nodding terms (with somebody) British EnglishBrE)know somebody to know someone but not very well (与某人)是点头之交 → have a nodding acquaintance (with somebody) at nod1(2)