Natural starch particles are roughly 30 microns or millionths of a meter wide.

天然淀粉粒子的体积大约是30微米，也就是几百万分之一米。

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At that size, the nanoparticles have 400 times more surface area than natural starch granules.

在这样的体积下，纳米粒子的表面积要比天然粒子多400倍。

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High viscosity pre gelatinized starch is a kind of natural starch as raw material, modified by degeneration.

高粘度预糊化淀粉是一种以天然淀粉为原料，经过变性改良而成。

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The tax also applies to bags made from paper, plant-based material, or natural starch.

BBC: Northern Ireland's new five-pence carrier bag tax