valuable

The experience was very valuable.

My time is too valuable.

You said, "The most valuable commodity I know is time."

They were probably really valuable so they wouldn’t have been used to hold cooking oil or common food items.

Of course, any kind of glass was very valuable so these red bottles would only have been owned by wealthy people.

In other words, companies might as well gather, use and sell both the oil and the gas when they find it, since both are valuable.

Then its refineries have two main tasks, convert less valuable crude oil into a more valuable form and create usable products from refined oil.

From the standpoint of real estate developers, the purpose of skyscrapers was to increase rental space in valuable urban locations.

One factor is the direct effect of logging, which often turns a forest into something approximating a huge pile of kindling (wood for burning): the ground in a logged forest may remain covered with branches and treetops, left behind when the valuable trunks are carted away; a dense growth of new vegetation springs up, further increasing the forest's fuel loads; and the trees logged and removed are of course the biggest and most fire-resistant individuals, leaving behind smaller and more flammable trees.

Another factor is that the United States Forest Service in the first decade of the 1900s adopted the policy of fire suppression (attempting to put out forest fires) for the obvious reason that it did not want valuable timber to go up in smoke, or people's homes and lives to be threatened.

However, loggers concentrated on removing those big, old, valuable, fire-resistant ponderosa pines, while fire suppression for decades let the understory fill up with Douglas fir saplings that would in turn become valuable when full-grown.

But there's another aspect of Abell's work that makes this map so valuable to astronomers.

As the demand for agricultural produce from both consumers and industry increased, agricultural land became more valuable and people tried to work the available land more intensively and to reclaim more land from wetlands and lakes.

These characteristics make Spartina a valuable component of the estuaries where it occurs naturally.

Along the east coast Spartina is considered valuable for its ability to prevent erosion and marshland deterioration; it is also used for coastal restoration projects and the creation of new wetland sites.

Teotihuacán obsidian must have been recognized as a valuable commodity for many centuries before the great city arose.

Other things we desire and hold to be valuable for themselves alone.

Just because a camera is old does not mean it is valuable.

Of course, any kind of glass was very valuable so these red bottles would only have been owned by wealthy people.

Now, it is not that bronze was all that rare in Greece then, it is just that bronze was valuable and could easily be recycled.

Uh, and it’s not just that old stained-glass is really valuable today, we lost, possibly, great art work.

Soon tulips were beginning to show up in different colors as growers tried to breed them specifically for colors which would make them even more valuable.

Eventually, specially-bred multicolored tulips became so valuable.

Oil pools are valuable underground accumulations of oil, and oil fields are regions underlain by one or more oil pools.

The increasing use of dried animal waste as a substitute fuel has also hurt the soil because this valuable soil conditioner and source of plant nutrients is no longer being returned to the land.