许多男孩子在7月4日那天放爆竹.Many boys explode firecrackers on the Fourth of July.桌上每个位置旁都有彩包爆竹.There was a cracker beside every place at the table.爆竹没响.The firecracker didn't go off....
侍者把他们点的餐端了过来，格雷厄姆签了单。The waiter returned with their order and Graham signed the bill.一名侍者尽力抹掉溅出的食物。A waiter mopped up the mess as best he could.侍者为他端上佐餐的红葡萄酒或者白葡萄酒。The waiter offered him red wine or white wine with his m...
Also waiting in the cloning lab this morning is the local industrialist.这天早上同时在实验室等候的还有一位本地的实业家.Molecular Cloning of a Novel Mannose - binding Lectin Gene from Bulbs of Amaryllis vittata ( Amaryllidaceae )一种新的甘露糖结合凝集素——朱...