Bring to a boil; simmer for 60 minutes over low heat. Constantly stir to prevent burning.

等火煮开，再用小火熬60分钟。煮的时候要不断搅拌以防粘锅。

youdao

For the final 10 to 15 minutes of cooking, stir the jam every 30 to 60 seconds to prevent burning.

WSJ: Gourmet Spreads

If it all becomes too much to bear, the design will even fuse on the inside to prevent fire burning the card from within.

ENGADGET: Panasonic preps SD cards that survive heat, water and X-rays, will probably outlast you

To remain competitive (and prevent their platform from burning), companies try to capture and institutionalize the dark powers of disruption.

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