guinea pig
US
UK guinea pig n: (small South American mammal)
SC 豚鼠 tún shǔ
My daughter has a pet guinea pig.
我女儿养了一只豚鼠当宠物。
guinea pig n: figurative ([sb] used as experimental subject) (比喻)
SC 实验对象 shí yàn duì xiàng
TC 實驗對象
TC 實驗對象
We volunteered to be guinea pigs for the new untested class format.
我们自愿成为未经检验类格式的实验对象。