Using the putty knife, work the sealant into the joint to ensure that the sealant has fully covered the void.

用油灰刀把密封剂填入接合处，确保密封剂全部盖住空洞。

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Using the putty knife, work the sealant into the joint to ensure that the sealant has fully covered the void.

用油灰刀把密封剂填入接合处，确保密封剂全部盖住空洞。

youdao