托福備考詞匯：plunge

石頭講詞：plunge [pl?nd?] n. 投入;跳進(jìn) vi. 投入;陷入;跳進(jìn) vt. 使陷入;使投入;plunge into 跳進(jìn); 縱身投入; 同義詞：n. 投入;跳進(jìn) investment, input n. 投入;陷入;跳進(jìn) plough into, throw one's self into n. 使陷入;使投入;使插入 let sb in for, let in for