perambulate的现在完成时怎么写？

...

perambulate的音标：perambulate的英式发音音标为：[pə'ræmbjʊleɪt]perambulate的美式发音音标为：[pə'ræmbjəˌlet]...

Selectmen are required by law to perambulate the bounds every five years.法律规定行政委员每五年应巡查一遍边界.Classics spot perambulate considers as the homicide that invades money sex together the case.经现场勘查认为是一起侵财性的杀人案件....

perambulate的一般过去时为：perambulated...

perambulate的第三人称单数（三单）为：perambulates...

perambulate的现在进行时为：perambulating...