这确实是一个问题，因为这两种疾病确实不一样。
他们必须这样做，因为这两种语言是活跃在他们的大脑在同一时间。
They have to, because both languages are active in their brain at the same time.
而且这两种模式都会存在因为他们会彼此滋养。
And both patterns tend to exist because they feed on each other.
因为我们对这两种广告都作跟踪调查。
这两种情况都很可能，因为我们知道的信息太少。
Either answer would be sufficient, since we have so little information to go on.
为什么？因为真正有影响的是这两种矿物质之间的平衡。
Why? Because it's really the balance of the two minerals that matters.
因为你使这两种化学品受热太久，所以产生了凝集物质。
The agglutinate substance occur because you leave the two chemicals under the heat too long.
因为你使这两种化学品受热太久，所以产生了凝集物质。
The agglutinate substance occur because you leave the two chemicals under the heat too long.
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