Although in 2011 it was improved, the structure is still not stable enough.
虽然在2011年的时候改进过了，但是它的结构还是不够坚固。
DEREK JONES: Exactly. Although they have promised that their system is improved.
德里克·琼斯：一点也不错。尽管他们承诺质检系统已有改善。
Although the relations between the two countries have improved, they are still subject to fluctuations.
两国关系虽有所改善，但仍起伏不定。
Although most of the treatments were improved, none of them can made us satisfied completely.
尽管治疗方法很多，但目前尚无一种令人满意的方法，需要临床工作者进一步深入研究。
Although most of the treatments were improved, none of them can made us satisfied completely.
尽管治疗方法很多，但目前尚无一种令人满意的方法，需要临床工作者进一步深入研究。
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