這就是倫敦西部三條主要交通干線(xiàn)的交匯處.This is the place where the three main arteries of West London traffic met.失事車(chē)輛阻礙了那條鐵路干線(xiàn)的交通.The wreck help up traffic on the railroads main line tracks.光纖已是長(zhǎng)途干線(xiàn)的首選傳輸媒質(zhì).Optic fiber is now the preferred...