Рядко in English:

Furniture is sparse in this room

sparse vegetation

By the year 1900 only a sparse population was left.

News of activities for the period 1683 to 1693 is rather sparse.

sparse population/vegetation/hair/rainfall

Set aside some quiet time twice a day to count kicks, once in the morning, when activity tends to be sparser, and once in the more active evening hours.

My hair is very sparse... but I'm old, so what do I care?

information coming out of the disaster area is sparse

sparsely populated

Silently, it slipped across the darkened hangar bay toward the other ships, taking advantage of the sparse cover along the way.

There are sparse data on the role of private practice in Iraq.

It makes things easier if your matrix is sparse.