This hump is absent in black bears which don't do the same kind of digging.

而黑熊并不需要做同样的挖掘动作，所以它们的肩膀上并没有这块隆起的部分。

But scientists have observed an accumulation of harmful mutations in parthenogenetic stick insects that are absent in their sexual relatives.

但科学家们已经发现，一种孤雌生殖的粘虫在缺乏性伴侣时积累起有害的变异。

Alonzo was absent in the western part of the State.

阿朗佐不在该州的西部。

The magnetic field is generated in the Earth's core, which would be absent in a hollow planet.

磁场是在地核中产生的，这在空心行星中是没有的。

Margaret was thankful that she received this letter while her father was absent in her mother's room.

玛格丽特很庆幸她父亲不在母亲房间时收到了这封信。

Fortunately, the common defects occurring in a majority of Down's syndrome children were absent in Paula. She has no intestinal malformations, hearing impairment, or severe visual problems.

幸运的是，宝拉没有出现大多数唐氏综合症儿童的常见缺陷。她没有肠道畸形、听力障碍或严重的视力问题。

In the early part of August he and myself were at work alone in the house, the other carpenters having left, and Epps being absent in the field.

八月初，他和我独自在屋子里干活，其他木匠都走了，埃普斯不在田里。