On the contrary, Chinese banks' efficiency was at a relative low level( before 2006)but has improved over time since 2007.

与此相反，2006年及以前，中国银行业（盈利）效率并不高，但2007年以来，效率排名逐年上升。

youdao

Security in Bor itself has improved, but the roads immediately to the north and south are plagued by bandits.

博尔镇的安全已经得到改善，但直接去北方与南方的道路却受到车匪路霸的侵扰。

youdao

Not only have American lives grown longer, but their quality has improved.

美国人不仅提高了寿命，而且还提高了生活质量。

youdao

Availability has improved in developing countries, but still remains limited compared to industrialized nations.

VOA: special.2010.04.12

They had been harassed,she says, by Muslim youths, but since a volunteer group was formed, security has improved.

VOA: standard.2009.08.31

Having a disability, people still look at you weird, but it's like, 'Alright.He's got a disability, but it's kind of okay now.'" Life for people with disabilities has improved greatly since Bobbi Wailes was stricken with polio as a 12-year-old, before the vaccine became available in the 1950s.

VOA: standard.2010.07.27

The OBV made new lows in December but has improved sharply from the lows.

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He was 19 years old and he was already quick, but he has improved a lot since then.

BBC: Football Focus

But politics has improved with new deals between Britain and China.

CNN: HE WINDOWS LEAK, PIECES FALL OFF THE FACADE.