"Food additive" means any synthetic compound or natural substance put into food to improve its quality, colour, fragrance or taste, or for the sake of preservation or processing.

食品添加剂：指为改善食品品质和色、香、味，以及为防腐和加工工艺的需要而加入食品中的化学合成或者天然物质。

youdao

Then began this business of deliberate food-growing and of food preservation .

然后开始这种有意识地种植粮食和储存食物的活动。

youdao

Its use made it possible to have the colors, shapes and tastes of food combined perfectly, which reflected the progress of food processing and food preservation techniques at the time.

这可使食物实现色、形、味等的完美结合，反映了当时食物加工和保存技术的进步。

youdao

There was the ultrasonic dishwasher, the atomic food preservation system and countless other wonders housed within its curvy shell.

FORBES: Ghosts Of Technologies Past

"There are a lot of products out there that use tricky wording so you believe it's whole grain when it's not, " says Cynthia Harriman, director of food and nutrition strategies at the Whole Grains Council, a subsidiary of the nonprofit food advocacy group Oldways Preservation Trust.

CNN: Don't be afraid of the dark -- whole grains explained

To this end, the PLP emphasise training in, for example, literacy (mathematics, English, Urdu), health, agriculture (crop, fish, poultry and livestock production), life skills (peace-building, conflict management and resolution), food processing and preservation and dressmaking.

UNESCO: National Literacy Programme (NLP)