delicate

These cavities in the earth trap time, preserving unique, delicate ecosystems for centuries.

An oarfish’s body is extremely delicate, so much so that if you pick one up it could break in half because of its jelly-like bones, Paig-Tran said.

However, the F protein has a delicate structure that changes rapidly from a "pre-fusion" form to a "post-fusion" form when the viruses fuse with cells.

He opted for deals over delicate diplomacy and often put a price tag on America’s friendships.

It’s 10 tons at least, far longer than it is tall, its seemingly endless neck and tail held parallel to the ground in surprisingly delicate balance.