有关Clock550的写作作文

高一英语作文:A Water Clock550字
Thewaterclockhasthreetheleftisatankholdingtankhasanarrowopeningthroughwhichwaterdripsintoasecondcontainer,alsoadethesecondtankisafloatingobject,totheendofwhichisattachedalongpolewithantherightisacylin...
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