The solution to today's Connections #993 is...
当杜耀豪把家族老照片发去，屏幕那头传来确认，这就是他们的亲戚。
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Цены на нефть взлетели до максимума за полгода17:55
Current X-ray lasers require facilities that are kilometres long. A cavity-based set-up about 66 metres in length has been developed that uses highly reflective mirrors to enable the generation of high-intensity pulses of narrow-band X-ray radiation. This promises to overcome the limitations of current X-ray lasers.
The protection problem