不过，这两种分子具有与天然蠕虫粘液一样的化学基，和相似的电荷数。

These, however, had the same crucial chemical groups as their natural counterparts and similar electric charges.

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数周以后，该中心的科学家们注意到在洛杉矶出现相似的一连串被称为“卡波西氏肉瘤”的罕见癌症。他们怀疑有一些奇怪而严重的什么东西正在发生。

When, a few weeks later, its scientists noticed a similar cluster of a rare cancer called Kaposi's sarcoma in San Francisco, they suspected that something strange and serious was afoot.

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标准普尔500指数（S&P 500）和纳斯达克综合指数（NASDAQ Composite Index）表现相似，在近日的成交中下跌几个点。

The S&P 500 and the Nasdaq Composite Index behaved similarly, shedding a handful of points in recent trading.

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