Half life time, simulated by a dispersion model, can represent the exchange ability of an area more completely and objectively.
认为以水质模型模拟半交换时间研究海域的水交换能力更全面、客观。
Ron looked both sulky and annoyed when he appeared at breakfast half an hour later, and though he sat with Lavender, Harry did not see them exchange a word all the time they were together.
罗恩半小时后来吃早饭时，显得很恼火。虽然他和拉文德坐在一起，但哈利没见他们说一句话。
Ron looked both sulky and annoyed when he appeared at breakfast half an hour later, and though he sat with Lavender, Harry did not see them exchange a word all the time they were together.
罗恩半小时后来吃早饭时，显得很恼火。虽然他和拉文德坐在一起，但哈利没见他们说一句话。
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