Finding information is hard, especially if tool support is limited.
查找信息是艰难的，特别是如果工具支持是受限的。
Another effective tactic is to make limited-edition handbags which are hard to get hold of.
另一个有效的策略则是制作相当难买到的限量版手袋。
Survival for twins, who must compete for a limited supply of milk, is hard.
双胞胎必须互相争夺有限的母乳以生存，所以他们都能活下来很不容易。
But its brittleness at high temperature and hard to machine limited its applications so far.
但是其高温脆性大，加工成型困难，至今得不到工业应用。
It is not hard to see why normal stars should be limited in mass.
要弄懂普通恒星的质量为什么要受到限制并不难。
It is possible even with limited experience, you just need to study hard.
见识有限可以，需要加强学习。
It is possible even with limited experience, you just need to study hard.
见识有限可以，需要加强学习。
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