重點講解：
1. turn up 找出；發(fā)現(xiàn)；注意到；出現(xiàn)；
Investigations have never turned up any evidence.
調(diào)查從沒發(fā)現(xiàn)任何證據(jù)F,[jmuI3)|*v&R-Pv~Ur。
2. poke around （通常指挪動很多物品）尋找，翻找；
He poked around the top of his cupboard for the bottle of whisky.
他翻遍了食櫥的上層，想找那瓶威士忌Q!#AV@jO,T7K4du#I。
3. participate in 參與；參加；
No professionals may participate in the amateur tennis tournament.
任何職業(yè)選手均不得參加業(yè)余網(wǎng)球錦標(biāo)賽8Idk;3pn~,iR。
4. happen to do sth. 碰巧；湊巧；
If you happen to talk to him, have him call me.
如果你碰巧能和他說話，讓他給我打個電話k_z9%If8i!wU-K]Uf=。