果实椭圆形，直径约3至6厘米，内部稍硬，很容易剥皮，撕开皮后，你会发现果肉柔软，吃起来微甜中透着酸。
The fruit is an oval shape and about 3-6 cm in diameter. Inside the slightly hard, but easily peal able skin, you can find a soft fruit that tastes slightly sweet, with a possible sour tinge.
果实也称为非洲梨，椭圆形，果皮颜色深蓝色和紫色相间，长约14厘米，内部果肉呈浅绿色。
The fruits are also known as African pears and are oblong dark blue to violet fruits up to 14cm in length, with pale green flesh inside.
科尔黑洞中心是不是奇点而是奇环-由自身动量维持的一维环形。它有两个视界(外部视界和内部视界)以及一个椭圆形的能层(ergosphere)。
At the centre of a Kerr black hole, there is no point singularity, but rather a ring singularity-a spinning one-dimensional ring held open by its own momentum.
应用推荐