To burn one's bridges is to commit oneself to an irreversible course.破釜沉舟,就是选择一条不可回头的道路....

commit oneself的音标：commit oneself的英式发音音标为：[kə'mit wʌn'self]commit oneself的美式发音音标为：[kə'mɪt wʌn'sɛlf]...

[法]承担义务...