1、Please write downbound your permanent address.
請寫下您的長住地址。

2、So when if rains, the soil is washed downbound the hills and into the creeks.
因此，下雨的時候，土壤從山上被沖刷下來，流到河里去了。

3、The teacher expresses her thanks and sets downbound to give her courses.
老師感動極了，于是坐下來給她補課。