be involved in ambiguity; ambiguous; difficult to grasp (/pin down); elusive; elusory; evasive; impalpable;subtle; unintelligible
? 他這句話的真正意思～。The real meaning of his remark is involved in ambiguity.
難以捉摸nán yǐ zhuō mō
捉摸：猜測，預(yù)料。不容易讓人猜到。elusive, hard to grasp with the mind, evasive, ambiguous, elusory, subtle