universe / cosmos / space
49631
aviation / flying
82282
study / research / investigation
75170
development / exploitation
58254
mechanism / organization / organisation
64294
moon
74279
universe / cosmos / space
49631
aviation
145881
mind / soul / heart / spirit / intention
112869
mentality
106749
health / sound / wholesome
74461
current status / condition / situation / circumstances / state
105236
valuation / estimation / assessment / evaluation
147112
technique
97130
altitude / height
83280
action of making something / -ification
53812
purpose / goal / aim / objective / intention
160332
closing / closure / shutdown / lockout / unsociable
152311
environment / circumstance
61848
adaptation / accommodation / conformity
131599
practice / practise / training
72053
equipment / device / facilities / installation
115046
manned / occupied / piloted
162130
closing / closure / shutdown / lockout / unsociable
152311
environment / circumstance
61848
stay / sojourn
122685
examination / test / study / trial / experiment
91854
enforcement / implementation / putting into practice (practise) / carrying out
94684
closing / closure / shutdown / lockout / unsociable
152311
environment / circumstance
61848
adaptation / accommodation / conformity
131599
practice / practise / training
72053
equipment / device / facilities / installation
115046
now / current / present / present time / as of
76559
universe / cosmos / space
49631
stress
22512
check / plaid
25087
closing / closure / shutdown / lockout / unsociable
152311
environment / circumstance
61848
examination / test / study / trial / experiment
91854
subject / testee
145461
recruiting / taking applications
153809
universe / cosmos / space
49631
mind / soul / heart / spirit / intention
112869
current status / condition / situation / circumstances / state
105236
grasp / catch / understanding
141191
technique
97130
study / research / investigation
75170