He grew a different crop on the same field five years in a row, what researchers call crop rotation.
他连续5年在同一块地上轮流种植不同作物，研究人员称之为轮作。
He decided to pay a call on Tommy Cummings.
他决定去拜访汤米·卡明斯。
I'll call you later on the landline.
晚些时候我会用固定线路给你打电话。
Every year my father would call a family powwow to discuss where we were going on holiday.
每年我爸爸都会召集一次家庭会议，讨论我们去哪里度假。
Despite my attempts to get him to call me by my Christian name, he insisted on addressing me as "Mr. Kennedy."
尽管我试图让他直接叫我的名，可他还是坚持称呼我为“肯尼迪先生”。
This is the last call for passengers travelling on British Airways flight 199 to Rome.
乘坐英国航空公司199次班机飞往罗马的乘客，这是最后一次通知登机。
Doctors work an average of 90 hours a week, while a few are on call for up to 120 hours.
医生们平均每周工作90个小时，而有些出诊长达120个小时。
See if you can rework your schedule and come up with practical ways to reduce the number of hours you're on call.
看看你能否修改你的时间表，想出切实可行的方法来减少你待命的时间。
Sofia was intending to call on Miss Kitts.
索菲娅打算去拜访基茨小姐。
Directors call the shots and nothing happens on set without their say-so.
导演们对拍摄有决定权，片场上的任何事都要经过他们允许。
He kept FBI agents on call 24 hours a day to do random tasks around his house—like repairing his lawnmower.
他让FBI特工每天24小时待命，围绕着自己的房子去执行一些随机的任务——比如说修理他的剪草机。
What does the author call on other writers to do?
作者呼吁其他作家做什么？
So call on the "doctor" inside your mind, and keep happy and well!
所以，在你头脑中呼唤“医生”，保持快乐和健康！
They tried their best to call on everyone to raise money for Wuhan.
他们尽最大努力呼吁人们为武汉筹集资金。
On March 30, Shanghai's vice mayor Wu Qing made the first 5G video call on the Huawei Mate X Smartphone.
3月30日，上海副市长吴清用华为 Mate X 智能手机打了第一通 5G 视频电话。
I'm going to call on one of my former classmates.
我要去看望我的一位老同学。
It'svaried work, but not stressful: when I'm on call I can expect a half-dozenrequests for help, none of them emergencies.
它包括了各种工作，但压力不是很大：当我在值时，我可以期待半打的寻求帮助的电话，没有一个是紧急的。
You might be a heating company that's on call 24 hours a day, a manufacturer that offers 142 different widgets, or a gym with 56 machines.
可能你是一家每天24小时都有电话打进来的暖气公司，或者是生产多达142种装饰品的制造企业，或者是拥有56种器械的健身馆。
Acupuncture can also help, but you'll have to arrange ahead of time to have a therapist on call when you go into labor.
针灸也可能会有帮助，但需要在进入临产时，提前电话预约好治疗师。
Researchers theorized that women are choosing quality-of-life benefits like flexible schedules and not being on call during certain hours, rather than higher pay, when negotiating starting salary.
研究人员推测，在薪酬谈判中，女性更看重生活质量而不是高薪水，从而选择更为灵活的工作时间，某些时间段她们也不会接受工作要求。
Cook expects the executives who work closely with him to be on call at all hours, [former Apple executive Mike] Janes said.
Cook希望和他密切接触的高管能在任何时候都电话在线，(前任苹果高管Mike)Janes说。
Seeing as paramedics have high stress jobs that require them to be on call and ready to save lives at a moment's notice, you might expect their mean annual salary to be higher.
可以看见的是，护理人员有如此高压力的工作，要求他们随叫随到，并时刻准备好立即抢救生命，你可能想象他们的工资应该会更高些。
Having two users is even better, but the second one can be on call for doing things like checking out live prototypes and mock-ups.
有两名用户就更好了，但是，第二名用户不必在现场，只需检查所设计的原型和模型即可。
My job entails being on call 24 hours.
我的工作需要一天24小时随叫随到。
The schools in the shop window rotate each year; currently, Kulosaari is on call, along with around 15 others.
每年用来向外展示的学校都要轮换，今年轮到的是科洛·萨里小学以及其他15所学校。
This job was better, but I still felt out of balance due to the two hour daily commute (one hour each way) and the on-call nature of the job.
它比原来的好一些但是我仍旧觉得失衡因为它每天上下班需要花费两个小时（来回各一个小时）而且需要随叫随到。
To ease the extra burden on working mothers, she added, parents could have particular days when one or the other is "on call," so that moms are not getting all of the appliance-disaster reports.
她说，为了减轻上班妈妈们的额外负担，父母二人可以轮流“值电话班”，处理家庭琐事。这样，妈妈们就不会总是接到电器出事故的电话了。
Other team members may be designated to an "on-call" function and brought in only if needed.
可以向其他团队成员分配“待命”职责，仅在需要时才让他们加入。
Other team members may be designated to an "on-call" function and brought in only if needed.
可以向其他团队成员分配“待命”职责，仅在需要时才让他们加入。
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