heavy
单词辨析：
普通用词，主要用于形容人或物的重量。
The child is heavy for his age.
就其年龄而言，这个小孩（体重）算是重的。
How heavy is this box?
这个箱子有多重？
指庞大而沉重的。
This machine is too ponderous to move.
这台机器太重了，没法挪动。
The elephant lowered its ponderous body into the river.
大象把它那笨重的身躯浸入河中。
形容重量比预想的沉，尤指书沉甸甸的。
He lifted a weighty volume from the shelf.
他从书架上取下一本厚重的书。
Your baggage must be very weighty.
你的行李一定很沉。
指间隔小、十分紧凑的。
He was late due to the heavy rain.
由于下大雨，他迟到了。
The heavy schedule indicates that he is really busy.
排得很紧的日程表说明他真的非常忙。
通常指某种液体、物质等被抽去水分的；也指全神贯注的，此时只作表语。
concentrated juice/milk/nuclear fuel
浓缩果汁/炼乳/浓缩核燃料
She made a concentrated effort to improve her work.
她集中精力把工作做得更好。
指雾、烟等浓的，也指人或物在某一空间内挨得很近的。
Traffic was slowed down by a dense fog.
交通因浓雾而减缓了速度。
More attention should be paid to the dense rurally-based population.
应该更加关注居住在乡村的密集人口。
The dense forest hid the guerrilla's movements.
密林掩护了游击队的行动。
指液体因接近固体状态而流动慢的，也可用于形容烟、云、树木等，作“茂密的”解时可与 dense 换用。
The paint seems too thick.
油漆似乎太稠了。
The air was thick with smoke.
空气中满是浓重的烟味。
The path rambles through a thick/dense wood.
小路弯弯曲曲穿过一片茂密的树林。
相关例句：
The business is thriving and Philippa employs two full-timers for the heavy work.
业务蒸蒸日上，菲莉帕雇用了两个全职员工来应付繁重的工作。
The outside air was heavy and moist and sultry.
外面的空气沉滞、潮湿而闷热。
He had been feeling drowsy, the effect of an unusually heavy meal.
他一直感到昏昏沉沉的，这是吃了一顿超级大餐的结果。
We talk in her Belgrade flat, full of heavy old brown furniture
我们在她位于贝尔格莱德的公寓里进行了交谈，那屋里满是结实的老式棕色家具。
Weeks of heavy rain have washed away roads and bridges.
几周的大雨将道路和桥梁都冲垮了。
Mr Maddison handed over his resignation letter with a heavy heart.
麦迪逊先生心情沉重地递上自己的辞呈。