| 释义 | 
             
                safety period for contraception
                
            避孕法bì yùn fǎ 
 contraception避孕bì yùn 
 birth control; contraception; practise contraception不冒风险bú mào fēng xiǎn 
 play for safety盛极一时shèng jí yī shí 
 be in fashion for a period基期jī qī 
 base period核安全hé ān quán 
 nuclear safety结算期jié suàn qī 
 accounting period; settlement period; calculation period安全期ān quán qī 
 safe period寒武纪hán wǔ jì 
 cambrian period宽限期kuān xiàn qī 
 grace period旺汛wàng xùn 
 best fishing period帧周期zhēn zhōu qī 
 frame period安危ān wēi 
 safety, safety and danger白垩纪bái è jì 
 the Cretaceous period聘期pìn qī 
 employment period; employment term旬xún 
 a period of ten days离别lí bié 
 part (for a longish period); leave; bid farewell围产期wéi chǎn qī 
 perinatal stage; perinatal period安全开关ān quán kāi guān 
 safety switch; safety cut-off系统安全xì tǒng ān quán 
 system safety; system security舍生忘死shě shēng wàng sǐ 
 disregard one's own safety; risk one's life为安全起见wéi ān quán qǐ jiàn 
 security measure; for safety's sake繁殖期fán zhí qī 
 idiophase; reproduction period; breeding season居安思危jū ān sī wēi 
 be prepared for danger in times of safety平安píng ān 
 safety
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