这些公园已经吸引了专业游客，包括来攀登技术难度高的山峰的登山者，以及被当地河流中的鲑鱼和鳟鱼吸引的渔民。
The parks already attract specialist visitors, including mountaineers, who come to climb the technically difficult peaks, and fishermen, lured by the salmon and trout in the region's rivers.
利用常规水平井技术开发深部薄油层有较高的技术难度。
It is very difficult to develop the deep thin reservoirs using the conventional horizontal drilling technology.
但是也有非一般的技术难度以及需要很好的想象力和创意。
But also extraordinarily difficult technically and requiring great imagination and ingenuity.
应用推荐