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What he would do is he'd put food powder in the dog's mouth to generate saliva.
他的做法是,给狗喂食，让狗分泌唾液。
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- 来自原声例句
What he would do is he'd put food powder in the dog's mouth to generate saliva.
他的做法是,给狗喂食，让狗分泌唾液。
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