floun·der¹/`flandə; ˈflaʊndə/ v [I] 1 to have great difficulty saying or doing something, especially because you do not know what to do 〔尤因不知做什么〕困难地说话［行事］: She floundered helplessly, unable to think of a reply. 她支支吾吾，不知所措，想不出一句话来作答。 2 to move with difficulty in water, mud etc, especially because you are trying not to sink 〔尤指在水、泥等中避免下沉而〕挣扎，艰难地移动