Englishfor English speakers
aircraft
Noun
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An aircraft is a flying vehicle, usually an airplane.
The army wants money to buy various aircraft, including helicopters and jets.
maintenance
Noun
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Maintenance is the process of regularly fixing things and keeping something in good shape.
After 8,000 km, you should take the car in for maintenance.
Wood houses can be a problem because they require regular maintenance.
log
Noun
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A log is a piece of wood that is long and round that has been cut off a tree.
We need another log to make a nice big fire.
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A log is a place where people or computer programs write things when they happen, and they write the date (and maybe the time) every time they write something.
We need to keep a log of everyone going into and out of this building.
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In mathematics, a log is a logarithm.
log
Verb
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When people log a forest, they cut down the trees to make logs.
This was a forest here, but it was logged a few years ago.
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When someone logs something, they write it in a log book.
Make sure you log that so we'll remember what time it happened.