Because of the cold temperatures, the tundra has two layers: top layer, which is called the active layer, is frozen in the winter and spring, but thaws in the summer.
由于寒冷的气温,冻土带有两层:最上面的一层被称为活动层,在冬季和春季被冻结,但在夏季解冻。
I had slipped a disc and was frozen in a spasm of pain.
我的一块椎间盘脱臼了,突然一阵疼痛使我动弹不得。
"It's quite a cross-section of American maritime history frozen in time on the Great Lakes.
VOA: special.2009.11.11
Under torture, Alexis--who probably dies of cold, not of torture, in a very frozen cell-- named Boyar accomplices.
严刑之下,阿列克谢命丧黄泉,他本人可能并非死于严刑,而是在冰冷的牢房里冻死的
So some parents now are choosing to save the cord blood, have it frozen, locked away somewhere just in case its useful to their child later in life.
一些父母现在选择保存脐带血,冷冻储存起来,保存在某个地方以防万一,也许孩子将来用得着
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