Despite the shifting R&D landscape, 'there's no need for the U. S. to panic, ' said Mr. Duga. Instead, he said, 'the U.

杜加说，尽管各国占世界研发总支出的比例有所变化，“但美国不必为此惊慌失措。”

youdao

Despite the shifting R&D landscape, 'there's no need for the U. S. to panic, ' said Mr. Duga. Instead, he said, 'the U.

杜加说，尽管各国占世界研发总支出的比例有所变化，“但美国不必为此惊慌失措。”

youdao