It becomes worse the more trailers you add each one adds another level of separation between the direction of your steering and the actual direction of travel.

增加更多拖车后情况就更糟糕了，每增加一辆拖车就会使实际运动方向更加偏离预期的运动方向。

youdao

After Katrina, FEMA eventually managed to deliver and set up about 38, 000 of these travel trailers.

NPR: FEMA Backs Off on Gulf Coast Trailer Evictions

For them, there are boutique companies such as Timeless Travel Trailers, of Wheat Ridge, Colo.

WSJ: The Tow-Along Trailer Goes Posh

Mayor MORAN: That's right, we were working with FEMA to provide some sites for emergency travel trailers.

NPR: Law Stands in the Way of Sturdy Katrina Cottages