To start the key exchange, Bob sends Alice two strong laser pulses separated by a precise interval.
开始密匙交换时，鲍勃要给爱丽丝发射两道强激光信号，之间的间隔是经过精密设定的。
“Centennial is strategically placed to take advantage of strong demand for thermal coal, with long term domestic contracts expiring in coming years,” Chief Executive Officer Bob Cameron said.
“Centennial在本土的长期合同将在几年内全部到期，这有利于公司从对动力煤的强劲需求中获利，”首席执行官BobCameron说。
Bob was having trouble getting to sleep at night. He went to see his doctor, who prescribed some extra-strong sleeping pills.
鲍勃晚上失眠。他去看医生，医生给他开了一些强力安眠药。
I never knew Bob was strong enough to lift that big box by himself. It was a real eye-opener for me.
我真不知道鲍勃有那么强壮，能搬起那个特大箱子，这次我算开了眼了。
Bob: No, I talk to you because I know that having a strong constitution is a important condition that you can compete with others in you work.
不，我告诉你是因为我知道有个好身体是你和别人竞争的一个重要条件。
Bob was having trouble getting to sleep at night. He went to see his doctor, who prescribed some extra-strong sleeping pills.
鲍勃晚上入睡有些困难，他去看他的医生，给开一些额外强笑的安眠药。
Bob was having trouble getting to sleep at night. He went to see his doctor, who prescribed some extra-strong sleeping pills.
鲍勃晚上入睡有些困难，他去看他的医生，给开一些额外强笑的安眠药。
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