time frame- a time period during which something occurs or is expected to occur; "an agreement can be reached in a reasonably short time frame" hours- an indefinite period of time; "they talked for hours" downtime- a period of time when something (as a machine or factory) is not opera...
很长一段时间 双语对照 例句:1.They can also estimate a planet's orbital period-the time it takes to circle itsstar-by observing the number of dips over a long period of time.他们还能估算出一颗行星的轨道运行周期，也即环绕其恒星一周所需的时间，以及观察行星长期运行所显示的浸渍数据。
Right now, for a short period of time, the Earth has two moons. One moon is the one you know. The other is atiny car-sized moon that showed up in the last few years and could leave within the next month.In mid-February two scientists at the Catalina Sky Survey noticed a moving ...
A.The Earth Has a New Moon For NowB.The Research On the Moon 2020 CD3C.Two Moons For the Earth From Now OnD.The Earth Needs the Mini-moon For Long 答案 【小题1】C【小题2】D【小题3】A 结果二 题目 Right now, for a short period of time, the Earth has two moons. One moon ...
reliably preserved in the fossil record; the 1,900 value for living families also includes those families rarely preserved as fossils. The several pronounced dips in the curve correspond to major mass-extinction events. The most catastrophic extinction took place at the end of the Permian Period....
Right now, for a short period of time, the Eartharound the Earth. The orbit taken by 2020 CD3,on thehas two moons. One moon is the one you know. Theother hand,circles around wildly.other is a tiny car-sized moon that showed up in the lastThis isn't the first time the Earth has...
a long period of time很长一段时间双语对照例句:1.They can also estimate a planet's orbital period-the time it takes to circle itsstar-by observing the number of dips over a long period of time. 他们还能估算出一颗行星的轨道运行周期,也即环绕其恒星一周所需的时间,以及观察行星长期运行所显示的...
It's a genuine forgotten gem: American student Jean Seberg's five-year adventure in Paris is mostly a period of romantic frustration. Irwin Shaw and Robert Parrish's look at the problems of an independent woman is remarkably insightful; the chronically miscast and underused Ms. Seberg is lumino...
【题目】 Right now, for a short period of time, the Earth has two moons. One moon is the one you know. T he other is a tiny car-sized moon that showed up in the last few yearsand could leave within tile next month.In mid-February, two scientists at the Catalina Sky Survey ...
Analysis of the rotation period of asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger – search for the YORP effect The spin state of small asteroids can change on a long timescale by the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect, the net torque that arises fro.....