1·They fired three distress signals.
他们发射了3次遇难求救信号。
—— 《柯林斯英汉双解大词典》
2·The crew did not send out any distress signals.
机组人员没有发出任何求救信号。
—— 《柯林斯英汉双解大词典》
3·We overlook all sorts of warning signals about our own health.
我们会忽视关于我们健康的各种警报信号。
—— 《柯林斯英汉双解大词典》
4·Reducing prison sentences would send the wrong signals to criminals.
减刑会向犯罪分子发出错误的信号。
—— 《牛津词典》
5·Callahan posits that chemical elements radiate electromagnetic signals.
卡拉汉假定化学元素放射电磁信号。
—— 《柯林斯英汉双解大词典》
1·Researchers are still working to determine what effect these seasonal signals have on humans.
关于这些季节标志对人类有何影响，研究人员仍在努力发掘中。
2·In the meantime, other scientists had identified a receptor in a group of neurons that enable fruit flies to smell carbon dioxide, which signals the presence of a good meal of tasty yeast.
同时，其他科学家已经在一组神经元中识别出了一个受体，这个受体能使果蝇闻到二氧化碳，二氧化碳是一顿美味的活酵母呈现的标志。
3·In the meantime, other scientists had identified a receptor in a group of neurons that enablefruit flies to smell carbon dioxide, which signals the presence of a good mealof tasty yeast.
同时，其他科学家已经在一组神经元中识别出了一个受体，这个受体能使果蝇闻到二氧化碳，二氧化碳是一顿美味的活酵母呈现的标志。
4·Even if you weren't ill the past few months the second trimester signals an end to your baby's most vulnerable development period allowing you a bit more freedom.
即使你在过去的几个月中没有不舒服，怀孕中期也标志着你的婴儿已经度过了最容易受伤害的时期，这会给你更多的自由空间。
5·Even if you weren't ill the past few months, the second trimester signals an end to your baby's most vulnerable development period, allowing you a bit more freedom.
即使你在过去的几个月中没有不舒服，怀孕中期也标志着你的婴儿已经度过了最容易受伤害的时期，这会给你更多的自由空间。