white lettuce

英

美

[网络] 白莴苣

Plant of western North America having trifoliate leaves and white or pink spider-shaped flowers; sometimes used as an ornamental. "Ulva species, commonly called sea lettuce, are among the relatively few green algae that are seaweeds."
北美西部或北部的一种白花菜属植物；有时作为一种观赏植物。石莼类海藻，即俗称的海白菜，属于海藻中较少见的绿藻
A can of tuna fish a loaf of white bread, and a head of lettuce.
一听金枪鱼、一条面包和一棵莴苣。
Two roast beef sandwiches on white bread with lettuce and mustard.
两份烤牛肉三明治加蒿苣及芥末。
Walking into a burger joint and grabbing a chicken breast on a white bread bun with a piece of old lettuce and a half-green, half-pink tomato is barely healthy eating.
到饼摊店抓一块鸡肉夹的白馒头里，加一段莴苣菜和半生半熟番茄才是健康用餐。
In order to discuss the feasibility of white clover as green manure in the production of organic vegetable, the experiments were conducted to investigate the effects of white clover as green manure on growth and quality of Brassica chinensis and lettuce ( Lactuca sativa).
为探讨白三叶茎叶作有机蔬菜生产基肥的可能性及肥效特点，论文通过盆栽试验研究了白三叶作基肥与不同施肥配方相比对青菜（Brassicachinensis）和生菜（Lactucasativa）生长及品质的影响。