贝蒂和迈克尔互相微笑，因为只有他们知道半个小时之前发生了什么。
Betty and Michael smiled at each other, for only they know what happened only half an hour earlier.
柠檬汁和苏打粉的混合溶液就是不会产生污渍的温和漂白剂。在清洗之前，把衣服在这种溶液里浸泡半个小时即可。
For a mild, stain-free bleach, soak your delicates in a mixture of lemon juice and baking soda for at least half an hour before washing.
抵达布鲁塞尔之前半个小时请通知我一声。
Please let me know half an hour before we arrive at Brussels.
在开始做作业之前，我们已经听了半个小时收音机。
Before beginning to do our homework, we had listened to the radio half an hour.
你应该在飞机起飞之前半个小时到那。
我们聊了大约有半个小时。在分开前，他打开钱包，给我看之前画给他的那幅超人漫画，他一直保存着。
We chatted for about half an hour, and before parting he opened his wallet and showed me the picture of Superman that he'd kept all this time.
每天晚上睡觉之前听半个小时的英语。
Second, before you go to bed every night half an hour English listening.
在她叫我进去之前，我已经在外面等了半个小时了。
I had been ringing outside for half an hour before she called me in.
我每天早晨从床上爬起来之前都至少要跟“床重力”斗争半个小时。
I have to fight bed gravity for at least 30 minutes every morning before struggling to get up.
我每天早晨从床上爬起来之前都至少要跟床重力斗争半个小时。
I have to fight bed gravity for at least 30 minutes every morning before struggling to get up.
我每天早晨从床上爬起来之前都至少要跟床重力斗争半个小时。
I have to fight bed gravity for at least 30 minutes every morning before struggling to get up.
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