相关单词近義詞 cautious 謹慎的, wary 小心的, circumspect 細心的, safe 安全的, valuable 貴重的, restrained 尅制的, protected 受保護的, secured 動詞secure的過去式..., shielded 有屏蔽的, fortified 加強的, hesitant 遲疑的, careful 小心謹慎的, noncommittal 態度曖昧的, cagey 謹慎的臨近詞guard, guardband, guardrail, guard wire, guard book, guard unit, guard foil, guard boom, guard rows, guard room, guard sign 返回 guardedness