indispensability

n. 不可缺少

indignant, indignantly, indignation, indignity, indigo, indirect, indirect object, indirect question, indirect speech (also reported speech), indirect tax, indirectly, indirectness, indiscernible, indiscipline, indiscreet, indiscreetly, indiscretion, indiscribable, indiscriminate, indiscriminately, indispensable, indisposed, indisposition, indisputable, indisputably, indissolubility, indissoluble, indissolubly, indistinct, indistinctly, indistinctness, indistinguishable, indistinguishably, indium, individual, individualism, individualist, individualistic, individualistically, individuality,