crossing over is cross over's Present Participle

cross over

US 
UK 
  • na.横越;〔美国〕死;【生物学】(染色体的)交杂
  • Web穿越国境;交换;互换
Simple Present:crosses over  Present Participle:crossing over  Past Tense:crossed over  
na.
1.
横越,穿过;〔美国〕死;【生物学】(染色体的)交杂

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard