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- 这些票的有效期只有一个月。
These tickets are available for one month only.
- 我们根据有效法律保护投资者的利益。
We protect the interests of investors by the legislation in effect.
- 总统答应会迅速有效地惩罚恐怖分子。
The president promised swift and effective retribution against the terrorists.
- 你如果可以正确有效地使用一个词,你就是了解它了。
If you can use a word correctly and effectively you comprehend it.
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