retain是什么意思？

Apartments will retain their appeal for a while for Millennials, haunted by what happened to home-owning parents.

Recently I attended several meetings where we talked about ways to retain students and keep younger faculty members from going elsewhere.

But inside, special windows cut power bills by blocking solar heat in summer and retaining indoor warmth in winter.

Apartments will retain their appeal for a while for millennials, haunted by what happened to home-owning parents.

Their babies retain the ability to produce their own chlorophyll, though they can't generate energy from sunlight until they've eaten enough algae to steal the necessary genes, which they can't yet produce on their own.

More than a decade ago, cognitive scientists John Bransford and Daniel Schwartz, both then at Vanderbilt University, found that what distinguished young adults from children was not the ability to retain facts or apply prior knowledge to a new situation but a quality they called preparation for future learning.

But numerous studies have now found that when classroom material is made harder to absorb, pupils retain more of it over the long term, and understand it on a deeper level.

More than a decade ago, cognitive scientists John Bransford and Daniel Schwartz, both then at Vanderbilt University, found that what distinguished young adults from children was not the ability to retain facts or apply prior knowledge to a new situation b

The scientists are breeding successive generations to arrive at varieties that incorporate salt tolerance but retain about 97 percent of the European rice genome.

Yet once they start growing, such plants seem not to retain the ability to hit the pause button on metabolism in their stems or leaves.