固若金湯
as firm as a rock.
eg：he will stick to his stand which is as firm as a rock.
中英俚語俗語來源：漢書："皆為金城湯池，不可攻也。 "
同義詞：安如泰山 safe upon the solid rock.
反義詞：不堪一擊 the earthen pot must keep clear of the brass vessel.
as firm as a rock.
eg：he will stick to his stand which is as firm as a rock.
中英俚語俗語來源：漢書："皆為金城湯池，不可攻也。 "
同義詞：安如泰山 safe upon the solid rock.
反義詞：不堪一擊 the earthen pot must keep clear of the brass vessel.