1.seal off 封閉,把...鎖起來
例句:Hundreds of police officers were deployed to seal off the plant and stop strikers from talking to journalists.
數百名警察被調來封鎖工廠,并禁止罷工者與記者交談 。
2.play into the hands of 故意使...占便宜,為...謀方便
例句:This trend has played into the hands of the big private-equity firms, which now lead a fifth of all takeovers, measured by value.
這個趨勢對大型私人股權投資公司有利,若以收購價值作為計量標準,它們現在已占全部收購交易中的五分之一 。