Often they fall flat on their face.

I won't let you fall flat on your face.

我会帮助你，不会让你失败的。

He slipped and fell flat on his face.

他脚底一滑，摔了个嘴啃泥。

A man walked in off the street and fell flat on his face, unconscious.

一个男人从街上走进来，趴倒在地，不省人事。

Some parametric computing formulae are derived with an optical fiber with spherical end used for out-of-focusing coupling, and by means of this, the laser-induced damage on fiber flat end face is eliminated in the case of inserting a pulsed YAG: Nd laser beam into the fiber.

导出了用端面球透镜离焦耦合时一些参数的计算公式，并用这种耦合方法消除了脉冲YAG：Nd激光注入光纤时在光纤平端面产生的损伤现象。

The heat density functions are looked as the boundary conditions and the 3D temperature fields of the waved-edge milling insert and flat rake face milling insert are analyzed with FEA method and judged with blurry mathematical theory.

以受热密度函数为边界条件，进行波形刃铣刀片和平前刀面铣刀片三维温度场有限元分析，并对有限元分析结果进行模糊数学综合评判。

Boundary condition of FMA of stress field was built. Finite element analysis of stress field was processed. Stress distributing regularity of wave edge and flat rake face milling insert was got. 4.

建立了应力场有限元分析的边界条件，对与温度场分析时相同时刻的应力场进得了有限元分析，得出了平刀面铣刀片和波形刃铣刀片的应力分布规律。

The flat tool face points upwards.

平的工具面朝上。

The flat face and the side face of the plastic hollow brick are provided with a sealing groove, a sealing strip and through holes; the plastic hollow brick can be formed once by pressing.

其构成是塑料空心砖的平面、侧面设有密封槽、密封条、通孔，一次压制成型。

Common processing method for scraping the method, the system can scrape flat face oil and storage capacity in tiny chips in the pits of ash, improve the benchmark reflect reliability and stability.

常见加工方法为刮制法，刮制的平板工作面能贮存润滑油和容纳微小灰屑在凹坑中，提高了基准体现的可靠性与稳定性。

Process for Machining the Flat Face of the Inspection Window for the Deep Endshield of YZR Range of Motors

YZR系列电机深端盖观察窗平面的加工工艺

This is partly the result of having large eyes that are set on a relatively flat face, thus increasing binocular vision.

由于猫头鹰面部相对扁平，再嵌上一双大眼睛，这样就增强了双眼视力。

The man with the flat face and the broken nose crushed the end of the cigarette on the table.

长着扁脸和断鼻梁的人在桌上揿灭了烟蒂。

Well, for a hemisphere we would need to add maybe the flat face of a bottom or something like that.

对于半球我们需要加，一个平的底面之类的边界。

Design of Oscillating Flat face Cam Mechanism with Constant width Cam

平底摆动从动件等宽凸轮机构的设计

Stick: A hook-shaped, hardwood device ( can also contain some composite materials) with a flat face on the left side for hitting the ball.

球棍：一种钩形硬木杆（也可用复合材料制作），左边为平面，便于击球。

Well, we enter when the ray hits the flat face, when we hit the plane.

当射线击中这个平面，就进入了区域。

Although geographically linked, the two provinces have long fought for political ascendancy

尽管在地理上彼此依存，两省却长期为获取政治支配权你争我夺。

The four provinces are riven by deep family and tribal conflicts

这4个省被严重的家族和部族纷争弄得四分五裂。

He was governor of the province in the late 1970s

他在20世纪70年代末担任该省的省长。

The man immediately responsible for this misery is the province's governor

对这种不幸境况负有直接责任的人是该省的省长。