沉重的英文：
heavy
hard
serious
critical

参考例句：

A leaden heart
沉重的心情

Having a ponderous, lumbering gait.
脚步沉重的，步态笨拙的。

The traveler was shouldering a heavy bag.
旅行者肩负着沉重的行囊。

The heavy box strained the rope to a breaking point.
那只沉重的箱子几乎把绳子拉断。

The crew hauled at the heavy sail
船员们用力拉着沉重的帆。

The old man lumped along with a heavy heart.
老人怀着沉重的心情蹒跚走去。

A heavy,dull sound;a thud.
笨重的声音沉重、阴沉的声音;重击声

The delivery man tramped in with a sack of potatoes across his shoulders.
送货的人肩上扛着一袋土豆脚步沉重地走了进来。

Its monstrous wings seem to wheel in the leaden air around me.
它那怕人的翅膀仿佛在我周围沉重的空气中旋转。

Romeo took his leave of his dear wife with a heavy heart, promising to write to her from Mantua every hour in the day.
罗密欧怀着一颗沉重的心跟他亲爱的妻子分手了，答应到曼多亚一定时时刻刻写信给她。

heavy是什么意思：
adj. 沉的；超出一般的；辛苦的；厚的；繁忙的；耗费...的；危险的；沉闷的；严厉的
n. 保镖；苦啤酒

a truck; a heavy duty truck
载重汽车

Light Burdens far heavy
远途无轻担

An elephant has a heavy build.
大象躯体庞大。

hard是什么意思：
adj. 硬的，坚固的；困难的；有力的；冷酷无情的
adv. 努力地；困难地；严重地，猛烈地

It is hard to conclude.
这很难断定。

It is blowing hard.
风刮得很大。

It was sleeting hard.
雨雪霏霏。

serious是什么意思：
adj. 严肃的，认真的；严重的；危急的；重要的；庄重的

It is a serious article.
这是一篇发人深省的文章。

do not deny that is a serious blow.
我不否认那是严重的一击。

It is a job requiring serious application.
这是一项需要非常勤奋的工作。