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，又或者是模仿只不過就是成功的社交互動的一種副產品？)

The cellular activity that produces these receptors also produces a type of circular DNA molecule as a by-product.(而產生這些受體的細胞活性也會制造副產品——一種環狀DNA分子。)

It appears, for instance, to be a by-product of conspicuous consumption.(比如說，它是炫耀性消費的副產品。)

Even though leather is used so much today, it is only a by-product.(雖然皮革在今天被如此廣泛的使用，但是這只是個副產品。)

The resulting software development can be considered a by-product of the knowledge accumulated.(隨后的軟件開發可以認為是知識累積的副產品。)

Strong, shatterproof and a highly valued form of polyester, PET is a by-product of the oil industry.(PET是煉油業的附屬產品，是一種強壯，抗摔打和性價比很高的聚酯。)

The plastic granulate itself is a by-product from diesel, and whatever is discarded in the manufacturing process gets recycled.(塑料原料顆粒本身就是柴油制造的副產品，在生產過程中分離出的任何物質也都會重新進入到生產循環系統中。)

Technologies do exist to manufacture propylene as an end in itself, rather than as a by-product.(科技確實可以將丙烯自身當作最終產物而不是作為一種副產品來制造。)

Like many of today's great inventions, the microwave oven was a by-product of another technology.(就像今天很多偉大的發明一樣，微波爐也是其它技術的副產品。)

The most potent greenhouse gas is HFC-23, a by-product of HCFC-22, a chemical used in, among other things, fridges.(溫室效應最強的其他十三氟甲烷(HFC-23)，是用于冰箱制冷的化學物質HCFC-22的副產品。)