植株树干用铝制套筒包着.Aluminum sleeves were placed around the stems.套筒必须将预计中积雪最高处以上的茎干包裹着.The sleeves must cover stems to a point above the greatest expected snow accumulation.此外, 在 长期 的使用以后套筒冠的固位力可能有显著地下降.Additionally, a marked d...
Lovelock eased back the throttles and the ship steadied.洛夫洛克慢慢地拉杆减速，船稳了下来。Somehow she steadied herself and murmured, "Have you got a cigarette?"她设法让自己镇定下来，并小声问：“你有烟吗？”Chin steadied herself with one hand on the desk.琴向后退了...