Tracking individual fish in a shoal is hard.
跟踪记录鱼群中的个体很困难。
It is hard to make fresh fish and other uncooked food look real.
这是很难作出新的生鱼和其他食品看起来很真实。
We made hard efforts in pushing the sale of your canned fish in our market.
我们费了很大的努力在我们市场上打开了你们罐头鱼的销路。
We made hard efforts in pushing the sale of your canned fish in our market.
我们费了很大的努力在我们市场上打开了你们罐头鱼的销路。
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