万无一失
(萬無一失)no danger anything going wrong
Example Sentences
航天发射任务容不得半点疏忽，所有系统和部件的检查都必须确保万无一失。
háng tiān fā shè rèn wù róng bù dé bàn diǎn shū hū, suǒ yǒu xì tǒng hé bù jiàn de jiǎn chá dōu bì xū què bǎo wàn wú yī shī.
There is no room for negligence in space launch missions, and all systems and components must be inspected to ensure they are foolproof.
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