A thin coil of smoke rose almost invisibly into the sharp, bright sky.
一缕轻烟几乎不见踪迹地升上了耀眼的晴空。
Space travel can be so delightful but at the same time invisibly dangerous.
太空旅行是如此令人愉快，但同时又存在无形的危险。
But increasingly, and nearly invisibly, our searches for information are being personalized too.
但是，我们搜索的信息也个性化了，这种情况越来越普遍，而且不易察觉。
Military art not only invisibly offer martial education but also possesses high aesthetic value.
军事题材艺术既起到了无形的军事教育作用，又具有极高的艺术审美价值。
Military art not only invisibly offer martial education but also possesses high aesthetic value.
军事题材艺术既起到了无形的军事教育作用，又具有极高的艺术审美价值。
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