崖沙燕是一种褐羽白腹的鸟。The sand martin is a brown bird with white underneath.他对待他们严肃认真，偶尔又逗得他们捧腹不已。He treated them seriously and, on occasion, entertained them hilariously.他腹肌发达，体型完美。He has a six-pack stomach and is extremely well...
Its nozzle was smeared with some kind of lubricant.它的喷嘴抹了某种润滑油。She turned the nozzle and the spray concentrated down to a stream.她掉转喷嘴,让水花集中喷入小河.The rubber nozzle is all cracked.那只橡胶喷管全裂了....