Baekeland recognized a killer ap when he saw one. If only he could come up with a synthetic substitute for shellac.

贝克兰独具慧眼，他迫切希望找到紫胶的合成替代物。

youdao

Baekeland recognized a killer ap when he saw one. If only he could come up with a synthetic substitute for shellac.

贝克兰独具慧眼，他迫切希望找到紫胶的合成替代物。

youdao