have several irons in the fireDIFFERENTto be involved in several different activities or have several plans all happening at the same time 同时从事数种不同活动;同时有数项计划 He has several economic irons in the fire, including gold and diamond mines. 他同时经营数个赚钱的项目,包括金矿和钻石矿。
→ have several irons in the fire at iron1(1)