有关: to have sth to do with, to relate to, related to, to concern, concerning...
开会: to hold a meeting, to attend a meeting...
谜团: riddle, enigma, unpredictable situation, elusive matters...
夹子: clip, clamp, tongs, folder, wallet...
不景气: slack, in a slump...
赞叹不已: to be full of praise (idiom)...
日记: diary...
机动: locomotive, motorized, power-driven, adaptable, flexible (use, treatment, timing etc)...
名额: quota, number of places, place (in an institution, a group etc)...
焊: welding, to solder, weld by heat...