Red aerial minifalres are used by some boaters in an emergen

这里的aerial
We do not have a great deal to go on other than three aerial shots of the incident.

英语sub-aerial erosion的意思
sub-aerial erosion是哪种erosion?主要体现在什么地方?这种erosion为什么会在黄色砂石悬崖上尤为体现呢?

the plane was accidentally rediscovered in an aerial survey of the island.介词为什么用in不是on,at?

英语翻译
The Global Aerial Research Centre has been allotted the task of building the fifth generation of mobile phone nets in Sweden.The most striking reason why they got the job,is their discovery of a new,highly noise resistant,antenna.It is called 4DAir,and comes in four types.Each type can only transmit and receive signals in a direction aligned with a (slightly skewed) latitudinal and longitudinal grid,because of the interacting electromagnetic field of the earth.The four types correspond to antennas operating in the directions north,west,south,and east,respectively.Below is an example picture of places of interest,depicted by twelve small rings,and nine 4DAir antennas depicted by ellipses covering them.
Obviously,it is desirable to use as few antennas as possible,but still provide coverage for each place of interest.We model the problem as follows:Let A be a rectangular matrix describing the surface of Sweden,where an entry of A either is a point of interest,which must be covered by at least one antenna,or empty space.Antennas can only be positioned at an entry in A.When an antenna is placed at row r and column c,this entry is considered covered,but also one of the neighbouring entries (c+1,r),(c,r+1),(c-1,r),or (c,r-1),is covered depending on the type chosen for this particular antenna.What is the least number of antennas for which there exists a placement in A such that all points of interest are covered?
On the first row of input is a single positive integer n,specifying the number of scenarios that follow.Each scenario begins with a row containing two positive integers h and w,with 1

英语翻译
on the the contrary ,to avoid problems in aerial navigation,the wheeless vehicle probably will travel no more than three inches above road surface.
请不要用在线翻译来翻译，请英语好的朋友帮帮忙！

字典上的有aerial adj 空中的
n 天线
这里有一句：when the spirit are down...
错了，不好意思，录入错误。是When the aerials are down ,and your spirit is covered with snows of cynicism and the ice of pessimism,then you are growing old,even at 20,but as long as your aerials are up,to catch waves of optimism,there is hope you may die young at 80.

英语翻译
本人翻译的是：基于Digital Aerial Orthobase的地籍测绘,Digital Aerial Orthobase不知道怎么翻译