begun是什么意思？

Since this realization, I have begun to make an even more determined effort to find friends in unexpected people and places.

Increasingly, researchers have begun to look at the quality of relationships, rather than at the frequency of contact, between the elderly and their children.

with surging obesity levels putting increasing strain on public health systems, governments around the world have begun to toy with the idea of taxing sugar as well.

But texting and instant messaging do — and a revolution has begun.

Since then, several academic institutions have begun to require IDPs for post docs And in June, the U.S. National Institutes of Health (NIH) Biomedical Research Workforce Working Group recommended that the NIH require IDPs for the approximately 32,000 postdoctoral researchers they support.

American universities, despite their global reputation for excellence in teaching, have only begun to demonstrate what they can produce in real-world learning.

But more recently, companies have begun to plan more affordable " suborbital " flights — brief ventures just to the edge of space's vast darkness.

In recent years, many mid-sized cities have begun to adopt a middle-of-the-road approach incorporating the excitement and opportunity of large cities with small cities' quiet after midnight.

It continued the efforts, begun in 1961, by Project OSCAR—a US-based group that built and launched the very first nongovernmental satellite just four years after Sputnik.

On top of the tragic loss of life, the accident in California will cast a long shadow over the future of space tourism, even before it has properly begun.

Researchers have already begun to use smartphones in social scientific research, either to query people regularly as they engage in their normal lives or to record activity using the device's built-in sensors.

since 2013, global scientific bodies have begun to back policies that support increased public access to research.