سجل المشارك في المؤتمر للتو.

A fully vocalized version is:

سَجَّلَ المُشارِكُ فِي المُؤْتَمَرِ لِلتَّوِّ.

A rough pronunciation is:

sajjala al-mushāriku fī al-muʾtamari li-t-tawwi

A few notes:

• سجل here is read as سَجَّلَ.
• المشاركُ ends in -u because it is the subject.
• المؤتمرِ ends in -i because it comes after في.
• للتوِّ is a fixed expression meaning just now.

Because verb-first word order is very common in Modern Standard Arabic.

So:

سَجَّلَ المُشارِكُ...
literally follows the pattern Verb + Subject + other details.

This is a very normal and natural MSA structure. English usually prefers Subject + Verb, but Arabic often does not.

Yes. That would also be correct.

The difference is mostly about style or emphasis:

• سجل المشارك... = more neutral, especially in formal written Arabic
• المشارك سجل... = puts more focus on the participant

So both are possible, but the original verb-first version is very typical in MSA.

In normal Arabic writing, short vowels and the shadda are usually not written. So سجل can only be read correctly from context.

Here, the intended reading is سَجَّلَ (sajjala), which is a common verb meaning to register or to record.

So the sentence is not using a different word; it is using the usual unvowelized Arabic spelling, and the reader supplies the correct pronunciation from context.

Here it means registered or signed up.

This verb can have more than one meaning in Arabic:

• to register / sign up
• to record / write down / log

In this sentence, the meaning is registered, not recorded.

The main clue is the structure:

سجل في المؤتمر

With في plus an event or institution, سجل commonly means registered in / signed up for.

If the meaning were recorded, you would usually expect a direct object, for example:

• سجل المعلومة = he recorded the information
• سجل الملاحظة = he wrote down the note

So the preposition and the overall context point to registered.

In Arabic, the subject often comes after the verb.

Here, المشارك is the subject because:

• it is the noun doing the action
• in full vocalization it is المشاركُ, with -u, the nominative ending for the subject

So even though it comes after the verb, it still means the participant as the doer of the action.

Because prepositions do not always match exactly between languages.

Arabic often uses في with verbs like سجل in this kind of context. Literally, في المؤتمر looks like in the conference, but idiomatically it can correspond to English for the conference or in the conference registration system/context.

So it is best not to translate the preposition word-for-word. Learn the whole pattern:

سجل في ... = registered for / registered in ...

للتو is a fixed expression meaning:

• just now
• a moment ago
• just

It tells you that the action happened very recently.

So in this sentence, it shows that the registration happened only a short time ago.

Because it contains:

• the preposition لـ
• plus the definite article الـ

When they combine, you get للـ in writing.

So للتو is written with two ل letters. In pronunciation, the ت is stressed because ت is a sun letter, so the expression is pronounced roughly like li-t-tawwi.

Arabic سجلَ is in the perfect form, which often corresponds to the English simple past or present perfect, depending on context.

Because the sentence includes للتو (just now), English may naturally translate it as:

• The participant just registered or
• The participant has just registered

So the Arabic tense is normal here, even if English uses a present perfect translation.

Because both have الـ, the Arabic definite article.

• المشارك = the participant
• المؤتمر = the conference

Without الـ, they would be indefinite:

• مشارك = a participant
• مؤتمر = a conference

So the Arabic matches the idea of referring to specific, known things.

No direct object appears here.

The verb سجل can be used without a direct object when it means registered / signed up, followed by a prepositional phrase such as في المؤتمر.

So the structure is:

Verb + Subject + Prepositional phrase + Time expression

That is why the sentence feels complete even though there is no direct object.