adj
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extremely demanding ; difficult ; requiring a great skill or care
매우 극단적으로 무리한 요구를 하는 ; 어려운 ; 대단한 기술이나 주의를 요하는
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The _____ math teacher subtracted points for even the most unimportant errors.
아주 가혹한 수학 선생은 진짜 하찮은 실수라도 가차없이 감점 처리했다.
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Weaving cloth out of guinea-pig air is an _____ occupation, because guinea pigs are small and their hair is short.
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The surgeon's _____ task was to reconnect the patient's severed eyelashes.