百度 虽然争议商标中的文字部分便于呼叫和记忆，属于争议商标标志的显著识别部分，但争议商标在整体视觉效果、含义等方面均与引证商标区别明显，双沟酒业已将其中的文字内容作为商标进行了单独注册，“双沟”商标经双沟酒业的使用已具有一定的知名度，相关文字的商品来源识别作用更为明显。

HOUSTON, April 21 (Xinhua) -- Three people were killed as heavy storms hit the central U.S. state of Oklahoma over the weekend, authorities said on Sunday.

A 12-year-old boy and his mother died in Moore, about 10 miles (about 16 km) south of Oklahoma City, on Sunday after floodwaters washed away their vehicle, said local police.

"This was a historical weather event that impacted roads and resulted in dozens of high-water incidents across the city," Moore police said in a statement.

Another person was killed on Saturday night after a tornado hit Spaulding, a town in Hughes County, the county wrote on Facebook.

Several homes and structures were destroyed, and there were "numerous washouts" of county roads, it said.