A test facility has been constructed for the fall-down test of high-temperature sphere into the water.
建造了高温炉下落小球实验装置，并进行了高温小球落入水中的实验。
This made her fall down in her seat by my son, "How come your test scores came down?"
妻子立刻在儿子身边坐了下来：“成绩怎么退步了？”
This made her fall down in her seat by my son, "How come your test scores came down?"
妻子立刻在儿子身边坐了下来：“成绩怎么退步了？”
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