单语范例（未经PONS编辑处理）
Seed should never treated with hot water as it will become mucilaginous.
en.wikipedia.org While the demand was the highest in history, seed production was steadily declining.
en.wikipedia.org The seeds of this plant contain a variety of coumarins including psoralen.
en.wikipedia.org In the field, under buried conditions, seeds will lose their viability in 25 years.
en.wikipedia.org Again the best 50 plants were selected, this time based on yield per head, seed size, shortness, and free threshing ability.
en.wikipedia.org