用鳄鱼嘴夹把电缆接到蓄电池上。Use the crocodile clips to attach the cables to the battery.莱顿瓶的用途是能蓄电.The use of the Leyden jar was that it enables electricity to be stored.电池带动的点磁铁, 配有蓄电电池.Battery operated electric magnets. Self contai...
他不得不与一位不情愿的伙伴合作.He was yoked to an disinclined partner.他不得不与一位不情愿的伙伴合作。He was yoked to an unwilling partner.姑娘通常都是满心情愿的,而他自己却有点鼓不起劲来.He had to get himself drunk instead of the girl....
那男孩用石子掷击小流氓的背脊.The boy gave the bully a pelt on the back with a pebble.男孩子喜欢在湖面上用石子打水漂.The boys liked to skip stones on the lake.他们也许是用石子来作计算的, 因“calculus ” 这个字原意是 “ 石子 ”.They may have used pebbles to calculate, for the ...