1.
single [ double ] spacing
(打字时行与行间的)单[双]行空距
2.
super high altitude flight
超高空飞行 超高空飞行
3.
operation weight empty [light condition]
空载行驶〔空载状态〕
4.
Policy Executives (Sea & Air)
政策执行员（海/空）
5.
completely blank line
完全空白行-ＦＯＲＴＲＡＮ用
6.
&Keep trailing blanks
行尾保持空白(&K)
7.
Corporate Support Officer (Sea/Air)
行政辅助员（海/空）
8.
Practice is better than theory.
“行动胜于空谈。”
9.
artificial asteroid
【航空】人造小行星
10.
AIRCRAFT FLIGHT SAFETY ANALYSIS IN LOW ALTITUDE AIRSPACE
低空空域航空器飞行安全分析(英文)
11.
spacecraft maneuver
太空飞行器机动飞行
12.
type with two empty spaces between lines.
打字时在行间空出两行。
13.
A journey through outer space.
航空，航行通过外层太空的航行
14.
of or belonging to astronauts or the science of astronautics.
属于太空航行员，或属于太空航行科学。
15.
The blank space between a margin and the beginning of an indented line.
行首空格白边与缩进行行首之间的空白处
16.
The spacing between lines, usually measured in points.
行距行与行之间的空格，通常以点测算
17.
A book containing blank checks issued by a bank.
空白支票簿银行签发的空白支票簿
18.
checkbook:a book containing blank checks issued by a bank.
空白支票簿:银行签发的空白支票簿.