All these would be welcome changes of substance and symbolism. But even this short list will throw up difficulties.

所有这些实质性和象征性的改变都会受到欢迎，但就是这几项措施执行起来也会困难重重。

youdao

A list should be provided of physicochemical and other relevant properties of the drug substance, including biological activity for Biotech.

应提供原料药的物理化学的或其它相关的性质的列表，包括生物技术产品的生物活性。

youdao

The article has described substance, characteristic, methods and die types of flasless die forging technology, and it has list the typical die construction figures of flasless die forging.

叙述了闭式模锻工艺的实质、特点、方式及模具型式，列举了典型的闭式模具结构图。

youdao

The new substance wasn't even on the IOC's list of banned drugs.

FORBES: Magazine Article

Dr Gerry McCann, a lecturer in sports medicine at the Centre for Exercise Science and Medicine at Glasgow University, said the list of banned substances was so comprehensive that it was highly unlikely that an athlete could take a legal substance, but register a positive result in a doping test.

BBC: Doping: Banned substances

Stilnox, used to treat insomnia, is not considered a performance enhancer and is not a banned substance, but the Australian Olympic Committee (AOC) put it on the prohibited list ahead of the Games.

BBC: Australian Olympic swimmers admit using sedative