Changes are driven by various factors like expansion of business, mergers, competitive pressure, cost-cutting, policy changes, and more.
这些变更是由各种因素驱动的，比如业务扩张、合并、竞争压力、成本缩减、策略变更等等。
2
Long run economic constraints include declining oil production and exports and pressure on water supplies caused by rapid population growth, industrial expansion, and increased water pollution.
长期的经济抑制包括石油生产和出口的下降，人口快速增长造成的供水压力，工业膨胀和逐渐严重的水污染。
3
A slight drop in cabin pressure as the shuttle climbed into the sky raised an alarm, but engineers attributed it to normal expansion that allowed some oxygen to escape.