单词	加强滑车
释义	加强滑车clump block
随便看	opportunistic disease opportunistic feeder opportunistic infection opportunistic planning opportunistic sampling opportunistic species opportunists opportunist species opportunities opportunities--strengths-- threats opportunities to see opportunities to see {=ots} opportunity opportunity analysis opportunity charging opportunity class opportunity cost opportunity cost of capital opportunity costs opportunity,embrace an opportunity exploitation opportunity fire opportunity group opportunity identification opportunity knocks (at the door)only once.