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- Predation test shows that a mite eats on average two eggs of housefly per day and four mites consume on average one first instar fly larva per day. 每只雌螨每天平均消耗2个蝇卵,每4只雌螨每天平均消耗1条1龄蝇类幼虫。
- The pest the first instar nymphy's mortality has significant correlation (at the 0.01 level) with the average temperature of ten-day. 松突圆蚧1龄若虫的死亡率与旬平均温度呈极显著相关。
- The rainfall with the mortality of the first instar nymphy have the significant correlation (at the 0.01 level), which is the key factor of the fist instar nymphy population. 林间虫口密度与降水量呈极显著负相关，降水量对初孵若虫的死亡率呈极显著相关，是影响初孵若虫种群的关键因子。
- The spore suspension of M.anisopliae and A. chrysogenum was employed in control test in the field against first instar larvae of Saperda populnea,and the mortality was 95.56% and 48.72%. 利用金龟子绿僵菌和枝顶孢霉菌液田间防治青杨天牛幼虫;死亡率分别为95.;56%25及48
- The livability of different instar larva of M. sexmaculatus was significantly different, from the first instar larva to pupa, the livability was 74.29%, 92.41%, 94.52%, 97.83%and 85.93%, respectively. 六斑月瓢虫各虫态的存活率差异显著，六斑月瓢虫卵的孵化率为90.;5%25，其1龄、2龄、3龄、4龄和蛹的存活率分别为74
- The first down was beginning to appear on the young boy's face. 那小男孩的脸上渐渐长出了汗毛。
- The young mother was delighted at her child's first "mama". 孩子第一次叫了声"妈妈",使年轻的母轻非常高兴。
- I met her first when I was a very young would-be musician. 我初次见到她时,我还是个一心想成为音乐家的十分年轻的人。
- Leaving her first job was a watershed in her life. 辞去她的第一份工作是她生活中的一个转折点。
- Cook the meat quickly at first to seal in the juices. 一开始要大火烧肉，以便保存肉汁。
- In the word "mother" the stress is on the first syllable. 在"mother"这一字里，重音在第一个音节上。,在＂mother＂这一字里，重音在第一个音节上。
- His illness was more serious than the doctor first thought. 他的病较医生原来以为的更严重。
- Passengers with cars must embark first. 带汽车的乘客必须先上船。
- I feel sorry for any young couple trying to buy their first house these days. 我为最近想购买第一幢房子的年轻夫妇感到可惜。
- Bob teed off on the new pitcher's first delivery. 鲍勃猛击那新投手所投的第一个球。
- Alarmed at the first sound, we hit the dirt. 第一声警报一响我们就迅速卧倒。
- She struck up the first carol on the grand piano. 她在那架大钢琴上演奏起第一支颂歌。
- He picked a winning number on the first draw. 他第一次便抽到一个中奖号码。
- Slop out the waste basins first when you get up. 起床的第一件事是把例盆倒了。
- The runner was retired put out at first base. 跑垒者于第一垒上被刺杀出局。
