That means that nanobacteria probably become coated with proteins or other organic molecules, which stop them from growing like a regular, jagged limestone crystal and instead look like round blobs.

• 这意味着纳米菌可能有着蛋白质或其他有机分子的涂层，阻止他们像锯齿状的石灰岩晶体一样正常生长，而是像是圆形斑点。