处于困境(或险境);如履薄冰;走钢丝
walk / tread a fine / thin line
处于困境(或险境);如履薄冰;走钢丝
to be in a difficult or dangerous situation where you could easily make a mistake
He was walking a fine line between being funny and being rude.他想滑稽而不粗鲁,难以把握分寸。
释义来自《牛津高阶英汉双解词典》第 9 版