hand-held refraactometer是什么呀!
hand-held refraactometer是什么呀!
hand-held 的意思是什么?
hand-held programmer是什么意思?
hand-held devices是什么意思
hand-held是什么意思
手持这个单词应该怎样写才规范?是hand held,还是handheld,还是hand-held?
was held 是什么时态
She held the little boy by the right hand.
Do you remember that once I held your hand?
在这句许中held She held out her right hand and opened her palm!
held out是什么意思呀?
second-hand chair是什么