Fleksebla korpo havas pli bonan ekvilibron.

In Esperanto, adjectives end in -a. So fleksebla is an adjective meaning flexible.

It describes korpo (body), and adjectives in Esperanto match the nouns they describe in number and case. That is why it is fleksebla korpo.

Fleksebla can be understood as:

• fleks- = the root related to bending/flexing
• -ebl- = able to be, capable of being
• -a = adjective ending

So fleksebla literally means something like able to bend or capable of being flexed, which gives the idea flexible.

Esperanto uses la for the, but it does not use a word for a/an.

So fleksebla korpo can mean a flexible body or the flexible body, depending on context. In a general statement like this one, leaving out la often gives the sense of a flexible body / flexible bodies in general.

Esperanto often uses the singular to express a general idea, just as English can.

So Fleksebla korpo... is like saying:

• A flexible body...
• The flexible body...
• A flexible body, in general,...

If you wanted to make it explicitly plural, you could say Flekseblaj korpoj havas..., but the singular is completely normal here.

In Esperanto, -as marks the present tense.

So:

• havas = has / have
• havis = had
• havos = will have

The verb does not change depending on the subject. So:

• mi havas
• vi havas
• li havas
• ili havas

all use havas.

Pli means more, and bona means good. Together, pli bona means better.

So:

• bona = good
• pli bona = better
• la plej bona = the best

In the sentence, pli bonan ekvilibron means better balance.

There are two things happening:

• -a shows that bona is an adjective
• -n shows the accusative case

Because bona describes ekvilibro, it has to match it. Since ekvilibron is the direct object and gets -n, the adjective gets -n too:

• bona ekvilibro
• bonan ekvilibron

This adjective agreement is a very important feature of Esperanto.

The -n ending marks the direct object in Esperanto.

Here, the thing being had is better balance, so ekvilibron is the direct object of havas.

Compare:

• Korpo havas ekvilibron. = A body has balance.
• Korpo havas bonan ekvilibron. = A body has good balance.

Because ekvilibro is the object, it becomes ekvilibron.

Pli is the regular Esperanto word for comparison meaning more.

With adjectives and adverbs:

• pli bona = better
• pli granda = bigger
• pli rapide = more quickly

So pli bonan ekvilibron literally means more good balance, which in natural English is better balance.

The comparison is understood from context. The sentence means that a flexible body has better balance than a less flexible one, or better balance in general.

Esperanto does have a way to say than:

• pli bona ol ... = better than ...

For example:

• Fleksebla korpo havas pli bonan ekvilibron ol rigida korpo. = A flexible body has better balance than a rigid body.

In your sentence, the second part is simply omitted because it is easy to infer.

Yes. Esperanto word order is fairly flexible because the -n ending marks the object.

The neutral order here is:

• Fleksebla korpo havas pli bonan ekvilibron.

But other orders are possible for emphasis, such as:

• Pli bonan ekvilibron havas fleksebla korpo.

That still means the same thing, because ekvilibron is clearly marked as the object.

Yes. Esperanto has many words that are international in form, especially in science, education, and abstract vocabulary.

Ekvilibro is a standard Esperanto word meaning balance or equilibrium. Many learners find words like this easy to recognize because they resemble English or other European languages.

In Esperanto, adjectives usually come before the noun they describe, just as in English:

• fleksebla korpo = flexible body
• bona ekvilibro = good balance

You can sometimes move adjectives for style or emphasis, but fleksebla korpo is the normal and simplest order.