laver harvester

例句：

1. 1. The farmer used a laver harvester to cut the wheat.
   农民使用一台拉夫收割机来割小麦。
2. 2. The new crop harvester is much more efficient than the old one.
   新型作物收割机比旧型更高效。
3. 3. The farmers are using this new laver harvester to save time and labor.
   农民们正在使用这台新的拉夫收割机来节省时间和劳动力。