It needs us to try and practice very hard.
这一问题需要我们不断努力和尝试。
It needs us to try and practice very hard.
这一问题必要我们不绝积极和实行。
In practice though, you're going to find it hard to hit that unless you're constantly in very high signal areas downloading movies.
实际上,你很少需要用到这么多的流量,除非你持续在强信号区下载电影。
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