Sampling of the plants was rather difficult and I found many shells of dead snails inside the mud.

采集crispatula var。 balansa样本有点困难，在泥里面我发现了很多死蜗牛壳。

youdao

Sampling of the plants was rather difficult and I found many shells of dead snails inside the mud.

采集crispatula var。 balansa样本有点困难，在泥里面我发现了很多死蜗牛壳。

youdao