tightly controlled   (厳しく管理された)

Travel to North Korea is tightly controlled.

News for public consumption was at first tightly controlled by governments.

These negotiations were tightly controlled by AFSCME leadership from outside Baltimore.

tightly packed   (ぎゅうぎゅう詰め)

The prisoners were tightly packed together in the river.

The dermal denticles are not tightly packed and overlap each other minimally.

The rolled pork is then tightly packed into nettings or other fibrous casings.

more tightly   (よりしっかりと)

Electrons in s orbitals are held more tightly than electrons in p orbitals.

The cervix is more tightly connected to surrounding structures than the rest of the uterus.

They don’t stray far from the center, keeping things even more tightly reined in than Paracletus.

tightly bound   (きつく縛られた)

Coenzymes are small organic molecules that can be loosely or tightly bound to an enzyme.

These tightly bound ions or molecules are usually found in the active site and are involved in catalysis.

Chromium tanned leather can contain between 4 and 5% of chromium, which is tightly bound to the proteins.