But is it really true that mimicry causes others to like us, or is mimicry just a by-product of successful social interactions?(真的是如此么，又或者是模仿只不过就是成功的社交互动的一种副产品？)
The cellular activity that produces these receptors also produces a type of circular DNA molecule as a by-product.(而产生这些受体的细胞活性也会制造副产品——一种环状DNA分子。)
It appears, for instance, to be a by-product of conspicuous consumption.(比如说，它是炫耀性消费的副产品。)
Even though leather is used so much today, it is only a by-product.(虽然皮革在今天被如此广泛的使用，但是这只是个副产品。)
The resulting software development can be considered a by-product of the knowledge accumulated.(随后的软件开发可以认为是知识累积的副产品。)
Strong, shatterproof and a highly valued form of polyester, PET is a by-product of the oil industry.(PET是炼油业的附属产品，是一种强壮，抗摔打和性价比很高的聚酯。)
The plastic granulate itself is a by-product from diesel, and whatever is discarded in the manufacturing process gets recycled.(塑料原料颗粒本身就是柴油制造的副产品，在生产过程中分离出的任何物质也都会重新进入到生产循环系统中。)
Technologies do exist to manufacture propylene as an end in itself, rather than as a by-product.(科技确实可以将丙烯自身当作最终产物而不是作为一种副产品来制造。)
Like many of today's great inventions, the microwave oven was a by-product of another technology.(就像今天很多伟大的发明一样，微波炉也是其它技术的副产品。)
The most potent greenhouse gas is HFC-23, a by-product of HCFC-22, a chemical used in, among other things, fridges.(温室效应最强的其他十三氟甲烷(HFC-23)，是用于冰箱制冷的化学物质HCFC-22的副产品。)
