the fact of weighing a lot and being difficult to lift or move 重的；沉的 Olivia felt the heaviness of her backpack increase the longer she ran. 奥利维亚觉得她的背包越跑越重。
the feeling in a part of the body of weighing a lot and being difficult to move 沉重： 身体一部分重量过大而难以移动的感觉a feeling of heaviness in the legs 腿部的沉重感
the fact of being more or worse than usual in amount, degree, etc. （在数量、程度等方面）超出一般的，比一般严重的 The roof was not visible because of the heaviness of the snow that was coming down. 屋顶看不见了，因为雪下得很大。
the quality of being large and solid 重量： 大而坚固的质量the heaviness of the dark wood panelling 深色木质镶板的沉重感
the quality in a material of being thick 重量： 材料厚实的质量The sewing machine started to lose strength against the heaviness of the fabric. 缝纫机因布料太重而开始失去力量。
- (literary)
the quality of being full of or loaded with something 充满，满载（某物） The heaviness of the jungle hung in the air. 丛林的沉重悬在空中。
the quality in food or a meal of being large in amount or very solid 量大的；厚实的 The salad worked well to combat the heaviness of the meal. 沙拉很好地抵抗了这顿饭的沉重。
- (usually disapproving)
the fact in a book, programme, style, etc. of being serious and difficult to understand or enjoy 严肃的；难懂的；艰涩的 Humour is sometimes used to counter the heaviness of death and tragedy. 幽默有时被用来对抗死亡和悲剧的沉重。
the fact of being hot and not having enough fresh air, in a way that is unpleasant 闷热的；沉闷的 I felt the heaviness of the heat as we came out of the Palace. 当我们走出宫殿时，我感到了酷热的沉重。
the fact in soil of being wet, sticky and difficult to dig or move over 黏重难挖的；泥泞难行的 water trapped by the coldness of ice or the heaviness of mud 被冰的寒冷或泥的沉重困住的水
Idioms
heaviness of heart
a very sad feeling 沉重： 一种非常悲伤的感觉