If you describe the sky or sea as angry, you mean that it is dark and stormy.
Near the metropolis of Chongqing, angry torrents of water swept away country roads.---- New York Times
If you flag or if your spirits flag, you begin to lose enthusiasm or energy.
①His enthusiasm was in no way flagging.
②By 4,000m he was beginning to flag.
关于“flag”的这个释义也是一个高频考点。我们再来拓展一个它的短语：flag down 表示“挥手拦下，招手叫(尤指出租车) ”【If you flag down a vehicle, especially a taxi, you wave at it as a signal for the driver to stop.】
Marlette was already out of the door, flagging down a taxi.
If you ask for leave to do something, you ask for permission to do it.
an application for leave to appeal against the judge's order.
When people till land, they prepare the earth and work on it in order to grow crops.
Workers were singing as they tilled the rice paddy fields.
If you labour to do something, you do it with difficulty.
For twenty-five years now he has laboured to build a religious community.
“labour”作为动词，还有一个比较常见的意思，表示“一再重申；反复说明 ”【If you labour a point or an argument, you keep making the same point or saying the same thing, although it is unnecessary.】
I don't want to labour the point but there it is.
同时，作为不可数名词，还有一个比较小众的意思，表示“分娩；临盆 ”【Labour is the last stage of pregnancy, in which the baby is gradually pushed out of the womb by the mother.】
I thought the pains meant I was going into labour .
同时“deliver ”作为动词可以表示“接生(婴儿) ”【When someone delivers a baby, they help the woman who is giving birth to the baby.】
Her husband had to deliver the baby himself.
①have a bun in the oven 怀孕，身怀六甲
② be in the (pudding) club 怀孕，肚子大了
③conceive v. 怀孕
【When a woman conceives, she becomes pregnant.】
About one in six couples has difficulty conceiving .
There are many theories that claim to be able to predict whether you're carrying a boy or a girl.
【If you say that a woman is expecting a baby, or that she is expecting, you mean that she is pregnant.】
She was expecting another baby.