两周前

Nighty rats were randomly divided into the groups of control, myocardial infarction and doxycycline, which were given orally 48 hours before and 48 hours after MI with 30mg/Kg per day. Protein and mRNA extraction was done on left ventricular samples containing scar and myocardium together. Samples were assayed from 1 day to 4 weeks post-Mi. The activity of MMPs was measured by zymography and collagen amount by the method of chloramine T, the ratio of II III collagen was assessed by immunohistochemical stain. Protein and mRNA of MMP-2, 9, TIMP-1 were determined by Western-Blot and RT-PCR.

分为对照组、心梗组和治疗组(D组，术前两天至术后两天，口服Doxycycline，30mg／kg／天)，分别于术后第一天、术后一周、术后两周、术后四周取心肌组织，采用免疫组化测定胶原含量和Ⅰ／Ⅲ胶原比例，酶谱法测定心梗后MMP-2，9活性蛋白的表达规律，Western Blotting进一步确定酶谱法中所消化条带蛋白的属性，逆转录-聚合链反应法测定心梗后MMP-2，9和TIMP-1的mRNA的变化规律，运用Acuson Sequoia 512超声心动图机分别测定心梗组、治疗组在两周和四周时左室前壁、后壁厚度以及左心室舒张末内径和左室射血分数。

I arrived two weeks ago and I have been working intensely to get fit to play.

两周前我加盟米兰，我刻苦训练以适应比赛。

A particularly quaint British example of mass hysteria was "railway spine": 19th century rail passengers reported feeling faint and suffering back pain - a psychological reaction that experts at the time said was due to the effect of 30 mph speeds on the human body.

直到今天仍旧会发生全民歇斯底里症。例如大概两周前坦桑尼亚的一个教室陷入一片混乱，许多女孩成为集体昏厥的牺牲品。

Just a fortnight ago, astronomers using the Hubble space telescope identified water vapour in the atmosphere of an exoplanet, albeit a gaseous exoplanet some 150 light years away.

就在两周前，天文学家使用哈勃太空望远镜，在一颗外星行星的大气中确定了水蒸气的存在，尽管该行星离我们有大约150光年。

The first of those names was expected to miss out after hurting his knee in the opening leg two weeks ago.

科尔是在两周前第一回合比赛中膝部受伤的，曾一度担心无法上场。

China last week also refused to allow USS Kitty Hawk permission to visit Hong Kong over Thanksgiving.

两周前，中国曾拒绝允许&小鹰号&航空母舰在感恩节期间进入香港。

Just two weeks before he died, Charles Darwin wrote a short paper about a tiny clam found clamped to the leg of a water beetle in a pond in the English Midlands.

达尔文逝世的两周前写了一篇短文，谈到英国密德兰地区的池塘里有颗小蛤夹在一只水生甲虫的腿上。

Just before she was offered the nomination two weeks ago, Gov. Palin went shopping at Out of the Closet, an Anchorage-based secondhand store, with her 14-year-old daughter Willow and her infant son Trig.

就在她两周前获得提名之前，佩林曾和14岁的女儿Willow及还在襁褓中的小儿子Trig一起到安克拉奇的二手商店Out of the Closet购物。

Two weeks after computers were hack ed at the UK's University of East Anglia and emails between climate scientists were posted on the internet.

两周前，英国东安格利亚大学的电脑被黑客入侵，他们与气候科学家之间的邮件被公布在网上。

A three-year-old boy abducted from his family almost two weeks ago is back at his San Bernardino home.

大约两周前从家里被拐走的三岁男孩现在回到了他桑伯纳德的家里。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。