其实他的小背包内同样有一顶滑稽、绿色的登山鸭舌帽，当他出发徒步攀登上千尺之前，在前往山脚时就会戴着它一般都会伴着一首乡村歌。
In fact in his little knapsack he also had a funny green alpine cap that he wore when he got to the foot of a mountain, usually with a yodel, before starting to tromp up a few thousand feet.
低温设备仪表在线阀门的阀帽和填料箱应为加长阀帽型或伴热型(必要时)，从而避免阀杆结冰。
The bonnet and packing box of low temperature service instrument in-line valves shall be extended bonnet type or heat traced, if necessary, to avoid freezing of valve stems.
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