grain supply system的意思|示意

It's also important to eat whole - grain carbohydrates, which supply valuable vitamin B6 selenium and magnesium. These are critical for activation the immune system against colds and flu.

吃全麦碳水化合物也很重要，因为它们能提供宝贵的维生素b6、硒和镁，这对激活免疫系统，抵抗感冒和流感至关重要。

The G20 is actually doing something productive and launching an initiative to create a system to more comprehensively collect and collate information on global supply and reserves of grain staples.

G 20峰会确实做了些实质性的事情。它提出了构建基于全球粮食供应与储存信息的综合收集核对系统的倡议。