Preventers are usually brown, red or orange inhalers.这些预防类药物通常是褐色, 红色或者橙色的.How can we improve engines, inhalers, and extinguishers?我们怎样改进引擎 、 喷雾器和灭火器?...
Both the horses were out, tacked up and ready to ride.两匹马都牵出来装上了马具,可以骑了.He had tacked this note to her door.他用图钉将这张便条钉在她的门上。He tacked the sheets of paper on as carefully as possible.他尽量小心地把纸张钉上去....