unimpressive battery life
...自动对焦极其谨慎，无出其右 Autofocus distinctly slower than most 电池寿命相当低调 Unimpressive battery life 摆脱了手动对焦的束缚 Accurate manual focus impossible (lens stops down uncontrollably) ..
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unimpressive battery life
电池寿命一般
以上为机器翻译结果，长、整句建议使用 人工翻译 。