机器厂商制造的耐用的水下器材的门槛儿确实提了老高。
Camera manufacturers have really raised the bar in producing durable underwater compacts at affordable prices.
很显然这样耐用的机子是不会便宜的，不过也有很多中等价位的机器，它们也有一定程度的保护功能。
Obviously this kind of durability doesn't come cheap, though there are plenty of mid-range models that offer some level of protection from the elements.
在许多机器中塑料零件可以替代金属，但他们并不很耐用。
Substitute, last Plastic can substitute for metal ones in a lot of machines, but they don't last very long.
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