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3. the act of undergoing testing
同义词:trial
4. trying something to find out about it
同义词:trial, trial run, tryout
5. a set of questions or exercises evaluating skill or knowledge
同义词:examination, exam
6. a hard outer covering as of some amoebas and sea urchins
同义词:trial
4. trying something to find out about it
同义词:trial, trial run, tryout
5. a set of questions or exercises evaluating skill or knowledge
同义词:examination, exam
6. a hard outer covering as of some amoebas and sea urchins
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