1 ( first gear) lowest gear on a bicycle/vehicle自行车或汽车的最低挡VERB + FIRST | PREPOSITIONVERB + FIRSTget into, move into, slam into挂上头挡◆As he moved into first, the engine made a strange noise.他挂一挡时，发动机发出奇怪的噪声。engage (formal) 挂上一挡◆She engaged first gear and pulled off.她挂上一挡把车开到路边停下。put sth into把⋯挂上头挡◆Put the car into first and pull off slowly.把车挂到头挡驶向路边慢慢停下来。find找到一挡位置◆It's very difficult to find first on this car.这辆车的一挡很难挂。PREPOSITIONin first挂一挡◆I had to drive all the way home in first.我不得不挂一挡一路开车回家。