That the performance on the footplate is bad, bad technique for landing and that behindhand flightpart are all technical problems.
技术上的问题表现为踏板准确性不高、落地技术较差以及腾空技术落后。
2
As I have been writing and talking about space flight for the best part of 20 years, a sudden switch of interest to the depth of the sea does seem peculiar.
在20年的绝大部分时间里，我一直在撰写和谈论太空飞行，突然将兴趣转向海洋深处，确实显得很奇怪。
3
As I have been writing and talking about space flight for the best part of 20 years, a sudden switch of interest to the depth of the sea doer seem peculiar.