tread a fine line
細道を歩く、～の間の危ない橋を渡る、Walk a fine line, Walk a thin line
英字新聞からの例文
- 引用元 : Financial Times (FT View) - Macron's meteoric rise lifts confidence in the EU (2017/06)
...the EU has to tread a fine line between respect for national sovereignty and the enforcement of common political values.
