许多天然和半合成的青霉素从此也出现了。

Many natural and semisynthetic variants have since been produced.

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由于成本和时间的原因，我们决定将复制品缩小一半，并使用合成材料来缝合。

It was decided to make the replica half-scale for reasons of cost and time, and synthetic materials were used for the stitching.

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两对情侣合成一组，一个传达者分别向自己的另一半和一个陌生人传递相同的情感。

Couples were grouped in foursomes, and the same encoder conveyed the emotions to both a romantic interest and a stranger.

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