植物黑

It's widely distributed over lots of living organisms as different as prokaryotes and vertebrates, even in plants.

在生物界中存在广泛，从低等的原核生物到脊椎动物甚至植物中都有褪黑素的存在。

She leaves out any rose cuttings that might harbor diseases, such as rust or black leaf, to keep them from spreading.

她不会留下任何可能对植物造成疾病的东西，如铁锈或黑叶，以避免其扩散蔓延。

The black mustard plant or tree contains the hard seeds , which are round in the shape .

黑芥菜植物或树包含硬的种子，这是一轮在形状。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。