2015年11月8日 · ),jam2的意思是a preserve of whole fruit, slightly crushed, boiled with sugar(即“果酱”),举例是strawberry jam。 再看起源,源自1720-30年间,并且可能是jam1(to press, squeeze, or wedge tightly between bodies or surfaces, so that motion or extrication is made difficult or impossible)的特殊用法。