It's very important to make a space maintainer if the second deciduous molar is lost too soon.
假如第二颗乳牙过早脱落，那摸装上间隙保持器是件要紧的事。
My brown leaves soon, and I am near to those of the deciduous trees are.
我的树叶即将枯黄，而邻近我的那些树木却在落叶了。
My brown leaves soon, and I am near to those of the deciduous trees are.
我的树叶即将枯黄，而邻近我的那些树木却在落叶了。
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