// ⚠️ 易错点8：长度计算公式写错（比如right-left 或 right-left-1）
Agar plates with E.coli growth on various concoctions, including MacConkey, Mueller-Hinton, and Brain Heart Infusion. Credit: HansN.
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Public health consultant Dr Ross Keat said supporting people earlier to make small preventative changes would make "a big difference later on".
基金会提供了120万美元的匹配赠款，条件是居民也要筹集等额资金——这一举动，让医院从一开始就不是“外来设施”，而是“居民自己的医院”。
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