Even in summer the temperature is subzero here.

即使在夏天这里的温度也保持在零度以下。

There is often subzero temperature in winter here.

这里的冬季的气温往往在零度以下。

Tumor cells are not uniquely susceptible to damage by subzero freezing.

肿瘤细胞不是唯一容易被低温所冷冻的细胞。

Depression of the pour point of diesel oil and improve its fluidity in subzero.

降低各种柴油的冷凝点和冷滤点，提高其低温流动性。

Oblivious to the subzero cold, a big male polar bear slumbers on a bed of snow.

一只成年的公北极熊对摄氏零下的低温无动于衷，照样在雪地里打盹。