单词学习：excitability 名词
excitability
/ɪkˌsaɪtəˈbɪləti/
兴奋性；易激动性
The excitability of the students in Professor Gu's class was palpable as he announced the surprise field trip.
当顾老师宣布这次惊喜的实地考察旅行时，他班上学生们的兴奋之情显而易见。
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