1. As the ageing of the population quickens, the number of elderly people is becoming very large.
2. As the aging of the population quickens, the number of elderly people is becoming very large.
3. quickens是什么意思
3. Kuang said human activities are concentrated north of the equator, which quickens the global warming process in the northern hemisphere.
4. As the population's ageing quickens, the number of elderly people is becoming increasingly large.