那辆车把那人来回轧了两次，先是倒着轧的，再是往前开着轧的。The car passed over the body twice, once backward and then forward.直升飞机的探照灯来回扫射这个被封锁的公园。Helicopters with searchlights swept the park which was sealed off.将牙线在齿间来回拉动。Draw the floss backwards a...
His greatest innovation was the use of interchangeable parts.他最大的革新在于使用了可互换的零件。These parts are fully interchangeable with those in other machines.这些零件完全可以同其他机器的零件相互替换.Matter and energy are equal and interchangeable.物质和能量...