Density Ball
buoyancy 浮力du jour
currently very fashionable or popularclunk
a dull sound made by two heavy objects hitting each other （重物的）碰撞声，哐啷声Ice Pack 冰袋
exert
to use power or influence to affect sb/sth 运用；行使；施加
What does "du jour" mean?
Du jour is an adjective used only after a noun, as in
soup du jour
topic du jour
hairstyle du jour
It comes from French, in which du jour means literally “of the day.” In English, it can mean either an item served in a restaurant on a particular day, as in example 1 above, or something that is happening or popular at the current time (this month, this year, etc.), as in examples 2 and 3. When it is used to mean popular, it can have a slightly negative meaning, similar to trendy.
Du jour is most commonly used in newspapers, magazines, and news shows. It is not common in academic writing. Below are some example sentences that show how du jour is used.
Our pasta du jour is linguine with clam sauce.
Long straight hair was the style du jour.
The recession was once again the topic du jour on the radio.
博主为啥说the ball du jour呢. 因为当时Japanese Foil Ball Challenge小火了一把,很多博主都在玩.
Here you go 和 there you go 两个常用口语表达的运用
Example
You want to know the real reason why I left Toronto? I just couldn’t stand the climate. There you go. It was just too cold!
你想知道我离开多伦多真正的原因吗？我受不了那里的气候。就因为这个。那里实在是太冷了。
Helen
There you go 在交换物品的时候说，意思就是“给、给你”。它还可以用于给出信息或原因，就如刚才的例句，离开多伦多的原因是因为气候太冷，there you go。说话的人给出了理由 there you go，意思类似“就这么回事儿”。请注意这个场景中，是不能用 here you go
Scientists Accidentally Discovered Quark Fusion, Could It Be the Future of Energy?
If someone is poised to do something, they are ready to take action at any moment.
baryon 重子;
hadron <物>强子;
zoom
[动词 + 副词或介词短语] to move or go somewhere very fast 快速移动；迅速前往
doubly charmed baryon 双粲重子
MeV mega-electron volt 电子伏特
aka
abbreviation for also known as
antimatter 反物质