这只狗的皮毛白色中带有黑斑.The dog's coat is white with black patches.这个梨子有碰伤的黑斑.The pear had bruises of dark spots.你是否有过眼前出现黑斑的现象?Do you ever see specks in front of your eyes?...
A formal contract is signed which is renewable annually.正式签订了每年可续签的合同。Seven million doses of vaccine are annually given to British children.英国孩子每年要接种7百万剂疫苗。El Salvador produces 100,000 tons of refined copper annually.萨尔瓦...