1、come up
走近;走到跟前
Her cat came up and rubbed itself against their legs.
她的猫跑上前来，在他们腿上蹭来蹭去。
He came up to me and said: 'Come on, John.'
他走到我跟前说：“快点，约翰。”
被提及;被讨论
The subject came up during a pre-dinner drink with our guests.
在与客人喝餐前酒的时候，有人提到了这个话题。
Jeane Kirkpatrick's name has come up a lot.
珍妮·柯克帕特里克的名字被多次提到。
即将发生;即将到来
Plan your activities so that you are rested and refreshed when something important is coming up.
做好日常规划，这样一旦发生大事，才能够从容不迫。
We do have elections coming up.
我们的确将要进行选举。
(工作)出现空缺;(商品)上市
A research fellowship came up at Girton and I applied for it and got it.
格顿学院设立了一项研究奖学金，我提出申请并且成功获得。
The house came up for sale and the couple realised they could just about afford it.
这幢房子放盘，两口子才意识到他们的钱差不多刚够买下它。
2、constant
持续不断的;重复的;一直存在的
She suggests that women are under constant pressure to be abnormally thin.
她暗示说女性总是处在保持身材异常瘦削的压力之下。
Inflation is a constant threat.
通货膨胀始终是个威胁。
恒定物;常数；常量；常项
In the world of fashion it sometimes seems that the only constant is ceaseless change.
在时装界，有时似乎唯一永恒不变的东西就是不断的变化。
Two significant constants have been found in a number of research studies.
若干研究已经发现了两个重要常量。