A ski trail densely packed with snow.

雪橇，雪橇，我们一起滑雪橇。

The brain's neurons are small, convoluted and very densely packed.

大脑的神经细胞微小、复杂其包裹得非常浓密。

The more densely packed the fibers and lignin, the stronger the bamboo.

纤维和木质素结合越紧密，竹子就越坚韧。

The female brain is also more compact and more densely packed with neurons.

女性的大脑更为紧凑，脑神经更为稠密。

The result is a densely packed, uniform film, ideal for lightweight solar cells.

那就是制造轻量型太阳能电池最理想的密集、均匀覆盖的膜片。