throw in扔進、接合、齧合、入夥、參加合夥經營學術名詞接入：電機工程、電力工程拉通：電機工程、電力工程注入：電機工程、電力工程插入：電機工程、電力工程英文釋義add as an extra or as a gratuitygive up in the face of defeat of lacking hope; admit defeatto insert between other elements