指令: instruct; order; direct inst ...中: hit; fit exactly缺少: lack; be short of; absence; ...或: nǎi-.無效: of no avail; to no avail; in ...的: 4次方是 The fourth power of 2 i ...條件: condition; term; factor符號: character; sign; symbol; mar ...太多的條件符號: too many conditional symbols條件符號: conditional code; conditional symbol包容條件符號: material condition symbols條件符號太多: error 127 too many conditional symbols宣告無效的條款: avoidance clause不可缺少的條件: indispensable conditions無效的符號運算: error 140 invalid floating point operation必須的條件，不可缺少的東西: a must不可缺少的原因, 不可缺少的條件: causa sine qua non部件符號: symbolic unit工件符號: piece symbol文件符號: file symbol元件符號: component symbol無效的: abortive; barren; be null and void; contravalid; dead; deficient; dimmed; effectless; fail; feckless; fruitless; frustrane; frustrate; futile; idle; illegal; inactive; ineffective; ineffectual; inefficacious; inefficient; inoperative; invalid; non effective; non operative; non-available; nonoperative; non-valid; noneffective; not effective; nugatory; overridden; unavailable; unavailing; unfruitfulness; useless; vain; void無效的；使無效；無效: null and void部件符號時間: ust unit symbol time邏輯元件符號: logical element symbol
