用油灰刀把密封剂填入接合处，确保密封剂全部盖住空洞。

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

youdao

用油灰刀把密封剂填入接合处，确保密封剂全部盖住空洞。

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

youdao