Andromeda sports a "double nucleus" - two bright spots at its heart - thought to be a sign of an oval disc of stars and gas.

仙女星座戏弄着双核心——在星座的中心有着两个明亮的区域——认为这是恒星和气体卵形盘的迹象。

youdao

Our hurry prevented any comment on the encounter with Heathcliff, as we stretched towards home; but I divined instinctively that Catherine's heart was clouded now in double darkness.

在我们往家跑时，急急匆匆地，也顾不上谈论刚才遇见希刺克厉夫的事。可是我本能地看透了凯瑟琳的心如今已布满了双重的暗云。

youdao

The mortality rate from heart disease and other stress-related ailments among trainees in their 20s and 30s is almost double that of Japanese of the same age, she says.

她说，就因心脏疾病和其他压力有关的疾病而死亡的比例而言，20来岁和30来岁的受训人员死亡率几乎是同年龄日本人死亡率的一倍。

youdao

No political movement driving funds to reduce the double dose of heart-related deaths among men.

WSJ: Guys Left Behind

The original transplant operation took place because Hannah had cardiomyopathy, which made her heart double in size and risk giving out within a year.

BBC: NEWS | UK | Wales | South East Wales | Heart op girl's games medal ban

Diadexus drew headlines last month when it helped identify what may be a new risk factor in heart disease: a little-known protein produced by the body that can double the risk of heart attacks.

FORBES: Divining Disease