*jam¹/dʒæm; dʒæm/ n 1 [C,U]a thick sticky sweet food made from fruit 果酱: raspberry jam 山莓果酱 2 [C] a situation in which it is difficult to move because there are too many people, cars etc 拥挤，堵塞: Visitors were asked to arrive at different times, to avoid a jam. 要求游客在不同时间到达以避免拥挤。 → see also 另见 TRAFFIC JAM 3 be in a jam/get into a jam to be or become involved in a difficult situation 陷入困境