The primary purpose of the mission is to collect observations that can be used to check the accuracy of simultaneous observations collected by NASA's Aura satellite.
任务的主要目的是收集观测数据，用来检查由NASA的Aura号卫星同步收集的观测数据的准确性。
Accordingly, you should always check that get returns a non-null value before using its result, as it is expected that the referent will eventually be garbage collected.
相应地，在使用其结果之前，应当总是检查get是否返回一个非null值，因为referent最终总是会被垃圾收集的。
The data of this paper is collected mainly by the method of deep interviews, with the assistance of the observation method and the check of the press and literature.
资料的收集主要采用深入访谈法，辅以观察法及文献报刊资料的查阅。
The data of this paper is collected mainly by the method of deep interviews, with the assistance of the observation method and the check of the press and literature.
资料的收集主要采用深入访谈法，辅以观察法及文献报刊资料的查阅。
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