1.momentum 鉴分；quality of motion 動量
inertance inertia 慣性 惰性
2.speed速率 ?velocity速度 （方向）rate 工資每小時20元也叫rate 某個量在某段時間里的變化 比率 ?
3 let go of a ball
drop 垂直高度的降落
4.成正比 in proportional to ?成反比 inversely proportional to
variation 變量 ?quilt 被子
5.preferred state of rest, 缺省狀態(tài) ，順其自然的狀態(tài)
take place, happen 發(fā)生
this lack of absolute position 愧沟，or absolute space 沒有絕對的位置或者是沒有絕對的的空間
6.He observed that the times at which the moons of Jupiter appeared to pass behind Jupiter were not evenly spaced 均勻分布的
7.無限的infinite ?極大的 ?有限的 finite
8.propagation 擴張 擴展 傳播
right angle 直角
9.body 物體 ?像身體一樣 有質量有形狀 object 物體 更強調對象
10 intrinsic 內在的 ?extrinsic 外在的
by any measure by any means 無論怎樣
fit in 聯系起來
11 狹義相對論 時間的距離就是空間的距離 空間的距離就是時間的距離
in term of
validity 合法性 有效期
coordinate玲献，frame瞳腌，frame of reference ,3-dimension ?
we are on good terms 我們關系不錯
plane 平面
飛機a flying vehicle with wings and one or more engines
平面any flat or level surface, or an imaginary flat surface through or joining material objects
（思想唠梨、存在或發(fā)展的）水平碴萧，程度棵譬，階段显蝌，境界a level of thought, existence or development
木工刨；刨子a tool with a blade set in a flat surface, used for making the surface of wood smooth by shaving very thin layers off it
the plane of the orbits of the planets ?行星運行軌道的那個平面
specify 具體說明订咸；明確規(guī)定曼尊；詳述；詳列to state sth, especially by giving an exact measurement, time, exact instructions, etc.
define 解釋（詞語的含義）脏嚷；給…下定義to say or explain what the meaning of a word or phrase is
闡明骆撇；明確；界定to describe or show sth accurately
~ sth 畫出…的線條父叙；描出…的外形神郊；確定…的界線；界定to show clearly a line, shape or edge
arbitriry 沒有理由的 隨機的 就這個了 專斷的
difference 任何差別都可以 ?distinction 更有性質上的區(qū)別
~ (between A and B)差別趾唱；區(qū)別涌乳；對比a clear difference or contrast especially between people or things that are similar or related
優(yōu)秀；杰出甜癞；卓越the quality of being excellent or important
特質夕晓；特點；不同凡響the quality of being sth that is special
~ (between A and B)區(qū)分悠咱；分清蒸辆；辨別the separation of people or things into different groups
（尤指給學生的）優(yōu)等評分，榮譽乔煞，獎賞a special mark/grade or award that is given to sb, especially a student, for excellent work
He seemed to think it a distinction.
他覺得這是一種殊勛。
diagonal 對角線的 寫下你的 diagram 示意圖 ? flowchart 流程圖 ?flowdiagram 流程圖
instantaneous ?response 瞬時的反應
