两次

Ms. Lum says Jaman's had fewer asthma attacks lately -- only one or two this year, versus one every two weeks before.

Olivia Lum说，最近她儿子哮喘病发作的次数少了，今年只出现过一两次，而过去每两周都会有一次。

I was once draftedby Lyndon Johnson and had to live in shit-ass Mexico for 21/2 yearsfor no reason.

威利：我进过一次监狱，结过两次婚，在林顿·约翰逊的招募下不得不在他妈的墨西哥呆了两年半。

The author identified and measured 5 landmarks of mandibula two times according to ten digital cephalometric radiographs selected randomly, then the mean error of measurements were determined.

随机选择10张数字化头颅侧位定位片，由作者对下颌骨上的5个测量指标进行先后两次定点和测量，然后对两次测量结果进行比较，检验重复测量误差的大小，是否对测量结果有影响。

In this active-control trial, 377 men with a history of chronic bacterial prostatitis, current clinical signs and symptoms, and laboratory evidence of prostatitis were randomized to treatment with levofloxacin 500 mg once daily or ciprofloxacin 500 mg twice daily for 28 days. The primary end point was microbiologic efficacy.

在这个主动控制（active-control）的临床试验中，377位有慢性细菌性摄护腺炎病史的男性参与，他们目前的临床症状与实验室指标都显示出罹患摄护腺炎的证据，这些患者被随机接受两种不同的药物治疗，包括每天服用一次500毫克的levofloxacin，或每天服用两次500毫克的ciprofloxacin，并持续治疗28天，首要的分析终点为微生物效力。

Sufficient quantities should be retained to conduct at least two full compendial analyses or, when there is no pharmacopoeial monograph, two full specification analyses.

应保留足够的样品以进行至少两次完全的药典分析或，当无药典专论时，两次规格标准的全分析。

Sufficient quantities should be retained to conduct at least two full compendial analyses or, when there is no pharmacopoeial monograph, two full specification analyses.

应当留足够的量来至少做两次法定的全检，或者没有药典专论时，两次质量标准的全检。

Comment: Biphasic or prandial insulin, added to two-drug oral therapy, was more effective than basal insulin in achieving optimal glycemic control

评论：一天两次或三次的胰岛素用量外加两种药物治疗较基础胰岛素用量能更好的控制脂肪量。

METHODS:Treatment records of 1100 teeth with acute or chronic pulpitis or chronic apical periodontitis were compared.

选择患急、慢性牙髓炎和慢性根尖周炎 80 0例 110 0个患牙，随机分为两组，对照组 5 14牙采用常规根管治疗术即两次法，实验组 5 86牙采用一次法进行根管充填，观察各组术后近期临床反应。

On three SOA levels, prime pictures were presented subliminally or supraliminally, and subjects were required to judge whether the target picture was a positive or a negative picture as soon as possible, while the ERPs was recorded during the subjects performing the task.

采用TAS-20-C间隔三个月重测的方法，筛选出述情障碍者(两次TAS-20-C得分均≥61)与非述情障碍者(两次TAS-20-C得分均≤51)各23人进入情绪启动的ERPs实验。

Once or twice in the Day time, I thought I saw the Pico of Teneriffe, being the high top of the Mountain Teneriffe in the Canaries; and had a great mind to venture out in hopes of reaching thither; but having tried twice I was forced in again by contrary Winds, the Sea also going too high for my little Vessel, so I resolved to pursue my first Design and keep along the Shoar.

有一两次，在白天，我仿佛远远看到了加那利群岛高山的山顶--泰尼利夫山山顶。当时我很想冒一下险，把船驶过去。可是试了两次，都被逆风顶了回来。而且，这时海上风浪很大，我们的船又小，无法驶向大海。因此，我决定依照原来的计划，继续沿海岸行驶。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。