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the; the /; / a; / the; /
it enables us to survive in the closed system of a spaceship it is a modern science that everybody has to learn it can be learned quickly if we study it hard it helps us to understand the relationship between living beings and the environment
To test the relationship between daylight and a disease of the glands common to birds. To test the relationship between daylight and migration. To test the relationship between migration and temperature. To test the relationship between daylight and changes in the season.
To test the relationship between daylight and a disease of the glands common to birds. To test the relationship between daylight and migration. To test the relationship between migration and temperature. To test the relationship between daylight and changes in the season.
ended ending to end being ended
To test the relationship between daylight and a disease of the glands common to birds. To test the relationship between daylight and migration. To test the relationship between migration and temperature. To test the relationship between daylight and changes in the season.
being intended intended to intend having intended
being intended intended having intended intending
He has exploited the earth' s resources. He has shown little understanding of nature' s ways. He has abused the earth' s resources. He has not appreciated nature' s beauty and benefits sufficiently.
the; the the; a The;不填 不填; the
intending intended being intended having intended
two position control proportion control reset control rate control
being intended intended having intended to intend
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