libration background
BeDict Logo

libration

/laɪˈbɹeɪ.ʃən/

Meanings
noun

天平动，摇动.

The act of librating.

Examples :

"The moon's subtle libration allows us to see slightly more than half of its surface over time. "
月球微妙的天平动使我们随着时间的推移能够看到略微超过一半的月球表面。
astronomy physics
noun

天平动， 摇动

The apparent wobble or variation in the visible side of the Moon that permanently faces the Earth, allowing observers on Earth to see, over a period of time, slightly more than half of the lunar surface.

Examples :

"Thanks to lunar libration, we can see a bit more than half of the Moon's surface over time, even though it always presents the same face to Earth. "
多亏了月球天平动，即使月球总是以同一面朝向地球，随着时间的推移，我们也能看到略多于一半的月球表面。
astronomy space physics
noun

天平动, 摆动

(by extension) A similar rotational or orbital characteristic of some other celestial body.

Examples :

"Because the planet orbits so closely to its star, scientists were surprised to discover a slight libration in its rotation, suggesting a previously unknown interaction with a distant companion. "
由于这颗行星距离它的恒星非常近，科学家们惊讶地发现它在自转中存在轻微的摆动，这暗示了它与一颗遥远的伴星之间存在着先前未知的相互作用。
astronomy space science

Related Words

Illustration suggesting

suggesting verb

/səˈdʒɛstɪŋ/ /səˈdʒɛstɪn/

暗示，示意

"Are you suggesting that I killed my wife?"

你是在暗示我杀了我的妻子吗？

Illustration scientists

scientists noun

/ˈsaɪəntɪsts/

科学家，科研人员。

"Scientists study plants to understand how they grow. "

科学家研究植物，从而了解它们的生长方式。

Illustration rotational

rotational noun

/roʊˈteɪʃənəl/ /rəˈteɪʃənəl/

轮岗员工，轮值人员

"The company considers each rotational a valuable asset, providing them with diverse training and opportunities to explore different departments. "

公司视每位轮岗员工为宝贵的财富，为他们提供多样化的培训和探索不同部门的机会。

Illustration temporarily

temporarily adverb

/ˈtɛmp(ə)ɹəɹəli/ /ˌtɛmpəˈɹɛɹəli/

暂时地，临时地

"The store is temporarily closed for renovations. "

这家店因为装修暂时关闭。

Illustration variation

variation noun

/ˌvɛəɹɪˈeɪʃn̩/ /ˌvæɹiˈeɪʃn̩/

变化，变动。

"There was a noticeable variation in the students' test scores this semester. "

这个学期学生们的考试成绩有明显的变动。

Illustration interaction

interaction noun

/ˌɪntəɹˈækʃən/

互动，交互作用。

"Be aware of interactions between different medications."

注意不同药物之间的相互作用。

Illustration characteristic

characteristic noun

/ˌkæɹəktəˈɹɪstɪk/ /ˌkɛɹəktəˈɹɪstɪk/

特点，特征。

"The characteristic smell of freshly baked bread always reminds me of my grandmother's kitchen. "

新鲜出炉的面包那种独特的香味总是让我想起我奶奶的厨房。

Illustration extension

extension noun

/ɪkˈstɛnʃən/

延伸，扩大，扩展

"The library offered an extension on the due date for the overdue books. "

图书馆允许延期归还那些已经过期的书。

Illustration permanently

permanently adverb

/ˈpɜːmənəntli/ /ˈpɝmənəntli/

永久地，长期地

"The spilled coffee permanently stained the white carpet. "

洒出的咖啡永久地 stain 了白色地毯。 Spilled coffee permanently stained the white carpet. （This is not good, better answer is:) 洒出的咖啡把白色地毯永久地染上了污渍。

Illustration observers

observers noun

/əbˈzɜːrvərz/ /əbˈzɜrvəz/

观察员，观察者

"Most impartial observers agreed that Sampras had not served well."

大多数公正的观察者都认为桑普拉斯发球状态不佳。

Illustration librating

librating verb

/ˈlaɪˌbreɪtɪŋ/ /ˈlɪˌbreɪtɪŋ/

摆动，摇摆。

"The antique scale in the science lab, with weights slightly unbalanced, kept librating gently back and forth before settling. "

科学实验室里那台古老的秤，由于砝码略微不平衡，在最终静止前，一直在轻轻地左右摆动。

Illustration previously

previously adverb

/ˈpɹiːvi.əsli/ /ˈpɹivi.əsli/

事先，预先

"Previously, I had planned to study for the math test on Saturday. "

事先，我计划星期六复习数学考试。