electric use only

electric use only electric electric electric electric electronic use only 翻译... use only diamonds翻译 factory use only是什么意思 一道牵涉到时态的英语竞赛题.求助大神解释~~It was only after some progress ____ in the use and development of electric current that men began to realize the importance and possibilities of magnetism.A.was made It was only after some progress----in the use and development of electric current that men beganto realize the important and possibility of mageetism.Awas made B has been made C would have been made Dhad been made 英语翻译CAUTION:Risk of electric shock and fire hazard .This product is not a toy and is not intended for use by children.For adult use onlyFor safe use,plug only into exposed wall outlets where a device is ventilated andcannot contact bed coveri intended for single use only for commerclal use only 是什么意思 INDUSTRIAL USE ONLY英文是什么意思 for industr ial use only use only rectangles什么意思 use only的中文是什么 vendor use only 的意思