1．You can already buy small video telephones，with builtin-screen and cameras，that transmit still images over regular telephone lines to anyone else with avideo telephone．
taOD,}c|$ )6U&^9= 現在已能買到小型的電視電話機，機上裝有屏幕和攝像機，可以通過平常的電話線把靜止的圖像傳送給任何一個有電視電話的人。(with．．．canleras用作獨立定語，修飾telephones。)
[1Pw2MC< K{)N:|y%!$ 5&a4c"fU S@i* +&Ot ol]"r5#Q_H 2．The scientific worker attempts to formulate these problems in accurate terms and to solve them in the light of all the relevant facts that can be collected by observation and experiment．
Q\>9 PKK WE\@ArY> 科學工作者力圖精確地描述這些問題，然后根據通過觀察和實驗收集到的有關事實來解決這些問題。(介詞短語in accurate terms作方式方法狀語，說明to formulate。in the light．．．experiment作方式方法狀語，說明tosolve。)
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6x dw{L,u`68 5dc24GB>_ 3．The atom is analogous to a miniature solar system，with a nucleus as the“sun''’and electrons as the“planets''’revolving in orbits around the nucleus．
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GVu" 原子類似于一個小型太陽系，原子核可看作“太陽”，電子可看作是沿軌道繞著核旋轉的‘行星”。 (analogous to， “與……相似”。with a nucleus as．．，and(with) electrons as．．．是 with引出的復合結構，用來對solar system作補充說明。)
gP=( 2EVE db$wKv O1 v+XB$j^ H 3LXS}~& 57r ?`'#* 4．The unit of heat on the c．g．s．system is the calorie，which is established as the amount of heat required to raise one gramme of water by one degree centigrade．
<P&~k\BuF{ |"V]$s$ c 熱的厘米·克·秒制單位是卡，將1克水升高攝氏1度所需的熱量定為1卡。(c．g．s．system=centimeter-gramsecond system，“厘米·克·秒制”。介詞短語on．．．system作定語，修飾unit。
MZp ` QC@nRy8% by所引導的介詞短語是raise要求的，這里by表示數量增減的絕對值。例如：increase by 10％，“增加10％”；decrease by two orders of magnitude，“減小兩個數量級”。)
Br w-"tmx xXG-yh AQX~do\A p H&Tb4 \hG o D 5．Sometimes the individual crystals，with plane faces and sharp edges and corners，are visible to the naked eye,and sometimes they can be seen only under a microscope．
v Y|{CBGbd paFiu Q 單晶有時用肉眼就能看得到，有時只有在顯微鏡下才能看得見，這種單晶有著平的晶面和銳利的棱角。(with plane faces．．．corners是介詞短語用作獨立定語，修飾crystals。)
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