1.These additional copies speed up the heat-loss process so the plants can more quickly return to using energy to grow.
speed up(使)加速;開快車;加緊
Action had been taken to speed up the release of cheques.
已經(jīng)采取行動加速支票的發(fā)放 。
2.They have genetically modified part of the mechanism in plants that is responsible for photosynthesis.
responsible for為…負(fù)責(zé)
I feel partly responsible for the problems we're in.
我覺得應(yīng)為我們遭遇的問題負(fù)部分責(zé)任 。