问题描述：
is clear from the fact 全句见下
that this device was a necessary structural compromise is clear from the fact that the cannonball quickly disappeared when sculptors learned how to strength the internal stucture of a statue with iron brace.
(就回答题目那句就可以了）是固定搭配吗?
that this device was a necessary structural compromise is clear from the fact that the cannonball quickly disappeared when sculptors learned how to strength the internal stucture of a statue with iron brace.
(就回答题目那句就可以了）是固定搭配吗?
问题解答：
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