trailing suction hopper dredger

例句：

1. 1. The tractor is designed to pullheavy loads and help farmers with their work.
   这台拖拉机被设计用来拉重物，帮助农民完成工作。
2. 2. The tractorhas a powerful engine that can pull heavyloads easily.
   这台拖拉机有一个强大的引擎，可以轻松地拉重物。
3. 3. The tractoris an essential tool for farmers in thefield.
   这台拖拉机是农民田间工作的必备工具。