coalsack

英式音标：['kəʊlˌsæk]

美式音标：['koʊlˌsæk]

词义：

n.

装煤麻袋，(Coalsack)煤袋（银河的黑暗区域）；

用法：

权威例句

Coalsack

Coalsack

HI Shells Behind the Coalsack

Return to Coalsack Bluff and the Permian–Triassic boundary in Antarctica

A Near-Infrared Imaging Survey of Coalsack Globule 2

Infrared observations of a BOK globule in the Southern Coalsack

Discovery of a Dusty Ring in the Coalsack: A Dense Core Caught in the Act of Formation?

Physical association between the southern coalsack and chamaeleon-musca dark clouds

Physical association between the Southern Coalsack and the Chamaeleon-Musca dark clouds.

Local interstellar medium kinematics towards the Southern Coalsack and Chamaeleon–Musca dark clouds

造句：

1. Remember, keep a positive attitude and good things will happen.

记住：保持乐观的心态，好事自然会发生。

来自美剧《摩登家庭》

2. A fellow doesn't last long on what he has done. He's got to keep on delivering as he goes along.--Carl Hubbell, Baseball Player

靠过去完成的无法让人保有成功，必须在路上持续交出成绩。

来自金山词霸 每日一句

3. Llewelyn was mounting the stairs up into the keep.

卢埃林登上台阶，走进城堡主楼。

来自柯林斯例句

4. When you are sitting, keep your elbow on the arm rest.

坐立时，把胳膊肘靠在扶手上。

来自柯林斯例句

5. It's a constant struggle to try to keep them up to par.

要让他们达标，需要不断努力。

来自柯林斯例句

[ keep 造句 ]