1. Considerable

1.相当大的

Means large in size or amount. Something that is considerable is big.
指尺寸或数量大。相当大的东西是很大的。

I have considerably more work to do now, than I did in the past.
我现在要做的工作比过去多得多。

The family has a considerable amount of money.
这个家庭经济富足。

2. Substantial
2.大量的

Means that something has of a lot of importance, size, or worth.
意味着某个东西很重要、无论是大小或价值。

This is a substantial problem, and we need to fix it right away.
这是一个严重的问题，我们需要马上解决它。

That was a substantial amount of food.
那有相当多的食物。

3. Significant
3.重要的，有意义的

Means that something is very important or worthy of attention.
意味着某件事非常重要或值得关注。

This is a significant moment in our nation’s history.
这是我们国家历史上的一个重要时刻。

I think the amount of work that needs to be done is significant.
我认为需要做的工作量很大。

4. Appreciable
4.可察觉的

Refers to something being important enough or large enough to be noticed. This word is almost always used to represent something in a positive way. Even if someone says that something is not appreciable, it means that something is not positive.
这个词指的是足够重要或足够大以至于引起注意的事物。这个词几乎总是用积极的意味表示某事。即使有人说某件事不可感知，也意味着某件事不积极。

There is an appreciable amount of caring in the school.
在学校能感到很多的关怀。

I am appreciable of everything that you have done for me.
我清楚地了解对你为我所做的一切。

5. Special
5.特别的

Refers to something that is great, better or different than other things. This is a word that is almost always used in a positive way.
这个词指的是比其他事物更大、更好或不同的事物。这是一个几乎总是含积极意义的词。

Mothers have a very special bond with their children.
母亲与子女有着非常独特的联系。

We will have a special ceremony next week.
下周我们将专门举行一个特别的仪式。

6. Serious

Refers to something that needs important attention or needs to be considered carefully.
指需要特别注意或需要仔细考虑的事情。

This is a situation of serious importance.
这是一个非常重要的情况。

We take all of this very seriously.
我们非常认真地对待这一切。

7. Exceptional
7.例外的

Refers to something that is unusual or not typical. This is usually used in a positive way. If it is not used in a positive way, then it is used to mean that something is large or of large importance.
指不寻常或不典型的事物。这通常使用褒义含义。如果它没有使用褒义含义，那么它就意味着某个事物是巨大的或是重要的。

Your work is exceptional.
你的工作很出色。

This building is an exceptional milestone for our city.
这座建筑是我们城市的一个特殊里程碑。

8. Extraordinary
8.杰出的

Means that something is unusual or remarkable or incredible. This is a word that is usually used in a positive way, but it can also be used to say that something was shockingly bad.
意味着某件事是不寻常的、非凡的或难以置信的。这是一个通常使用褒义含义的词，但也可以用来表示有些事情非常糟糕。

The artist’s work is extraordinary.
这位艺术家的作品超凡脱俗。

The party was an extraordinary disaster.
这次聚会非同寻常的糟糕。

Great
棒极了

Can also mean that the quality of something is better than normal. This usage of the word great is always positive.
也可能意味着某些东西的品质比正常的要好。“great”这个词的用法总是褒义含义。

You did a great job on your presentation.

你的演讲做得很棒。

It feels great to be home again.
回到家感觉真好。

This definition of great also has many synonyms.
伟大的定义也有许多同义词。

9. Prominent
9.著名的

Refers to something being important or famous.
指一些重要或著名的事物。

He holds a prominent position in the community.
他在社区内占有重要地位。

This is a prominent restaurant.
这是一家有名的餐馆。

10. Eminent
10.声名显赫的

Means that someone is important, famous, and respected in their profession (job).
意味着某人在他们的职业（工作）中是重要的、著名的和受人尊敬的。

She is an eminent professor in science.
她是一位杰出的科学教授。

This is one of the eminent companies in technology.

这是一家知名的科技公司。

（来源：沪江英语）