weigh up
1．examine by a balance；ascertain the heaviness of称；称出…的重量Cotton was picked and weighed up．棉花采下来并称了重量。
2．evaluate；consider carefully估量；权衡；仔细考虑
He was weighing up whether to stay or not．他在考虑是否留下来。
The judge carefully weighed up all the evidence．法官仔细掂量了所有的证据。
You should weigh up the consequences of the action．你应仔细考虑这一行动的后果。