1·These synthetic chemicals taste sweet, but they have no calories.
这些人工合成的化学物质有甜味，但它们不含卡路里。
2·His team suggests that at least the smaller Buddha might be partially rebuilt with existing fragments injected with a synthetic material designed to halt weathering.
他的小组建议至少较小的那尊佛像可以进行重建，用现存有的碎片再加上一种人工合成的材料阻止其风化。
3·Then synthetic human sweat could be used in mosquito studies, sparing human subjects from the misery of being bitten.
这样，人工合成的汗液就可早日用于蚊虫研究，帮人类解开被蚊虫叮咬的秘密。
4·By 1897 a synthetic derivative (acetyl salicylic acid) of the plant's active ingredient (salicin) was created. This allowed aspirin to become the most widely used medicine in the world.
1897年，这种植物中的有效成分的人工合成衍生物诞生了，于是阿司匹林变成了世界上应用最广泛的药品。
5·Don't reach for synthetic pheromone spray, though, unless you have money to burn.
不要去找人工合成信息素香水了，除非你钱多得没处花。
1·But there's competition from the synthetic products, too.
但是也有来自合成物质产品的竞争。
2·"Antioxidant supplements in pills are synthetic, factory processed, and may not be safe compared with their naturally occurring counterparts," they wrote.
抗氧化补充片剂是由工厂生产的合成物质，相比于天然产物其可能不安全。
3·Synthetic leather frame and external heel clip provide support and stability.
合成物质皮革体格和外部的脚后跟修剪提供支持和安定。