We began writing this book and making field observation of the native species some five years ago.

我們大約在5年前開始編寫此書，并進行國產(chǎn)種類的野外觀察BBWO逼逼被狂操的逼欧美老妇人。

Objective To study the influence of extreme environmental conditions of the field exercise on intestinal bifidobacterium in tank crew after training.

目的了解野外訓練環(huán)境條件對坦克乘員腸道雙歧桿菌的影響97人人爽日日动。

Objective:To study the clinical condition and pathogenic characteristics of acute diarrhea disease among military personnel during military field exercise ,thus to provide reference basis for making some measures to prevent and control the disease.

目的 ：了解部隊野外駐訓期間發(fā)生急性腹瀉病的臨床情況及病原特點欧美乱操屄片，為部隊制訂防治措施提供參考依據(jù)亚洲一级婬片A片AAA毛片to。

Binoculars or field glasses are a great help when we want to see what birds are doing.

當我們想要看鳥正在干什么的時候人人操操操干干，雙筒望遠鏡或野外望遠鏡用處很大91麻豆精品福利。

This trailer is available for kitchen support in field work. Every cooking unit is dismountable for maintenance and replacement.

該車適用于作戰(zhàn)部隊伙食單位野外作業(yè)的炊事后勤保障；可分別對各個炊事單元進行拆卸或更換維護玖玖色精品在线。

A long time ago, a crowd of Buddhist nuns and several woodcutters ate a kind of mushroom in the field.

從前，日本有一群尼姑和幾個樵夫吃了一種蘑菇两男一女一级A片免费看，于是手舞足蹈起來晚上网站h欧美，以致在野外一直跳動幾個小時。15世紀初毛片视频免费观看高清在线，非洲奴隸過著牛馬不如的生活日韩国产在线，每當痛苦不堪時，一些人就吃一種肉豆蔻果實一木高清dvd。

The results of the field survey and model test are coincide.

野外實測和模型試驗的結果相互吻合人妻无码亚洲。

According to the material of field investigation and survey, tectonic erosion periods and their erosion are studied.

根據(jù)野外調查和實際測量資料，研究了黃土高原構造侵蝕期和期內造成的侵蝕无吗不卡强奸轮奸视频。

This is our the fourth field trip.

這是我們的第四次野外旅游毛片大全免费。

Next Friday we're going on our first field trip.

下周五，我們打算進行我們的第一次野外旅行欧美日韩性爱视屏一。