In American society, however, the class structure was less rigid; some people changed occupations easily and believed it was their duty to improve their social and economic position.

然而，在美国社会，阶级结构没有那么严格；有些人很轻易地就改变了职业，并认为提高他们的社会和经济地位是他们自己的责任。

youdao

SCAT-I avionics uses the received signal to improve position accuracy and signal integrity along a defined flight path.

SCAT-1航空电子设备利用接收到的信号，来改善沿着确定的飞行路径的位置精确度和信号集成度。

youdao

Sanyuan's products were found to be safe, and the company has said it would use its unscathed reputation to improve its position in the market.

三元公司的产品被认为是安全的，该公司已表示，将弥补其损害的声誉，以提高其在市场中的地位。

youdao

The paper calls for a series of measures to improve the financial position of the colleges, including better funding per student, a VAT exemption and an insurance rebate.

BBC: Education & Family

Antitrade activists frequently suggest that free trade is a "race to the bottom" and lobby for currency depreciation in order to improve the export position of American firms.

FORBES: The sheer folly of currency devaluation.

"One of their first inquiries will be into standards in primary schools, and the best way to improve on the current position when a quarter of 11 year olds leave without being able to read, write, or count properly, " said Conservative education spokesperson, Damian Green.

BBC: Tories set up education test-bed