内容摘要：Some 30 to 40 percent of lawn mowers sold in the US are produced domestically, with leading brands like John Deere and Toro manufacturing a portion of their products in the US. However, the remaining 60 to 70 percent of lawn mowers are imported, primarily from China, Taiwan and Vietnam.

Some 30 to 40 percent of lawn mowers sold in the US are produced domestically, with leading brands like John Deere and Toro manufacturing a portion of their products in the US. However, the remaining 60 to 70 percent of lawn mowers are imported, primarily from China, Taiwan and Vietnam.

While China hawks in the US have long called for greater oversight of the country’s students at American universities, alleging that some among them might secretly be Beijing’s spies, Rubio’s announcement is the most dramatic step ever taken by a US administration against students from any specific nation.Here is how it could impact students, American universities, US-China relations, and the US itself:

What has Rubio announced?In an X post, Rubio wrote that “The US will begin revoking visas of Chinese students, including those with connections to the Chinese Communist Party or studying in critical fields.”The U.S. will begin revoking visas of Chinese students, including those with connections to the Chinese Communist Party or studying in critical fields.

— Secretary Marco Rubio (@SecRubio)The US has not specified what counts as a “critical field”. But in March, a US congressional committee of the House of Representatives

to leadership at Carnegie Mellon University, Purdue University, Stanford University, the University of Illinois Urbana-Champaign, the University of Maryland and the University of Southern California

requesting informationThe Hajj lasts five to six days, depending on how it is performed. It begins on the 8th of Dhul-Hijjah, a day known as Tarwiyah, when many pilgrims travel to Mina, a desert valley located about 8 kilometres (5 miles) from Mecca, where they spend the night in preparation for the next day’s rituals.

It ends with Tashreeq days, where pilgrims return to Mina for the symbolic stoning of the Devil at a site called Jamarat, after which they perform final rituals to symbolise the end of the Hajj. Some may leave on the 12th if they complete their rites early, while others stay until the 13th.5. What is the difference between the Hajj and Umrah?

While the Hajj is a compulsory pilgrimage for all able-bodied Muslims once in their life, Umrah is a recommended smaller and simpler pilgrimage that Muslims can perform any time throughout the year.The graphic below shows some of the key differences between the Hajj and Umrah: