cos lettuce

noun

1. 直立莴苣；长叶生菜
   a type of lettuce with long crisp leaves

1. 30 species disease of leguminous vegetables ( including bean, pea, cowpea, haricot bean, horsebean) and other species of vegetables ( from, garlic, leek, carrot, caraway, spinach, celery, cos lettuce, fennel).
   豆科蔬菜（菜豆、豌豆、豇豆、扁豆、蚕豆）病害30种：其他蔬菜（葱、蒜、韭菜、胡萝卜、香菜、菠菜、芹菜、莴苣、茴香）病害39种。
2. Study on the distribution and combined of selenium in cos lettuce
   莴苣中硒含量分布和赋存形态研究

noun

1. lettuce with long dark-green leaves in a loosely packed elongated head

   Synonym:    cosromaineromaine lettuce

2. lettuce with long dark-green spoon-shaped leaves

   Synonym:    romaine lettuceLactuca sativa longifolia