seed weight

例句：

1. 1. The seeds are heavy and need to be stored in a cool place.
   种子很重，需要储存在凉爽的地方。
2. 2.The farmer carefully weighed each seed before planting.
   农民在播种前仔细称量了每颗种子。
3. 3.The weight of the seeds is an important factor in determining their germination rate.
   种子的重量是决定其发芽率的一个重要因素。