为了得到苗条的身材，范妮尝试了许多方法，但都是徒劳的。所以现在她晚饭什么也不吃了。
To get a slim figure, Fanny has tried many ways, but in vain. So now she is reduced to not eating anything for supper.
他深知与女巫斗争是徒劳无益的，所以他灰心丧气地放弃了。
He well knew the futility of trying to contend against witches, so he gave up discouraged.
所以我开始在网上查找，也是徒劳无功。
所以压抑是徒劳的。对吗？
我试着阻止他，但是却是徒劳的，所以让他逃走了。
在仲夏，它可以热和渔业等，所以，就好像它是徒劳无功。
In mid-summer, it can be hot and the fishing so-so, just like it is anywhere.
周五很冷，所以当周六和周日的炎热袭来时，我们周五所作的所有测试都只是徒劳。
The weather was cold on Friday, so all the tests were in vain because of the Saturday and Sunday heat.
周五很冷，所以当周六和周日的炎热袭来时，我们周五所作的所有测试都只是徒劳。
The weather was cold on Friday, so all the tests were in vain because of the Saturday and Sunday heat.
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