Max zips back and forth across the living room.马克斯在客厅里快速地来回走动。This coat buttons, but that one zips.这件上衣用钮扣, 那件用拉链.The jacket zips open easily.这夹克衫的拉链很容易拉开....
尽管超导电缆的前景光明,却并非尽善尽美.Promising as they are, superconducting cables aren't perfect.即使这样, 超导电缆的能量损失也仅及相应铜电缆的1/200.Even so, these wires still lose only 1 / 200 th as much power as equivalent copper conductors.你也找到主电缆的基本...
他在州街登上了一辆北行的有轨电车。He took a northbound trolley on State Street.售票员吹哨子, 电车停了下来.The conductor blew his whistle, and the tram stopped.这儿乘电车很近便.This place is close and convenient to the street - car....