空气中小水滴和粒子的热张弛时间是非常短的。
The thermal relaxation time of small drops and particles in air is quite short.
张弛花了一个月的时间来紧张筹备，包括与教练协商确保最优的价格。
Zhang spent a month working tirelessly to prepare, including negotiating with the dance instructors to ensure the best possible price.
张弛花了一个月的时间来紧张筹备，包括与教练协商确保最优的价格。
Zhang spent a month working tirelessly to prepare, including negotiating with the dance instructors to ensure the best possible price.
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