water-tight and impene trable ? 他們搞小圈子,~。They formed a small coterie which was water-tight and impenetrable.
水潑不進(jìn),針插不進(jìn)shui po bu jin,zhen cha bu jin
water-proof and impenetrable
水潑不進(jìn),針插不進(jìn)
watertight and impenetrable ~的獨立王國 independent kingdom that seals itself off from the outside—region or depart ment that refuses to obey the central authority