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1.weigh up to 重达
Some larger cans weigh up to a pound (or more) and could be used for upper body exercises.
一些较大的罐头重达一磅（甚至更多），可以被用作上肢的锻炼。
2.interfere with 干扰，干涉
Yes, this is communication, but there is very little opportunity for noise from an outside source to interfere with the communication.
的确，这就是沟通，但是来自外界的噪音很少有机会来干扰这个沟通。
3.equivalent of 相当于
For all of that, even with extra pay for overtime, he earned the equivalent of $1 an hour.
虽然加班有额外的加班费，他挣的钱也只相当于1美元一小时。
