查询词典 if and only if

So it may be perfectly sensible to take up after-dinner speaking and only be adequate at it, if that's what you want to do.

因此，最理性的做法也许是，只要你愿意，就进行餐后演讲吧，做到过得去就行。

It is concluded by the research that: it is viable to achieve the proposed treatmentobjectives to the alga concentrated feeding water during the peaking summer season,such as, lower turbidity, control of residual aluminum and pH, equivalent performanceof pre-chlorination, only if dosing chlorine dioxide as pre-oxidation algaecide,ploy-aluminum as coagulant, HCA as flocculant, without the needs of modification toexisting water treatment facilities.

研究结果表明：在不改变现有给水处理设施的情况下，以二氧化氯作预氧化除藻剂，聚合氯化铝作混凝剂，高分子HCA作助凝剂，既可以有效降低水的浊度、控制水中余铝，又可以合理调节水的pH值，同时水中余氯还可以达到滤前加氯的效果，是处理夏季高藻期原水比较理想的工艺路线。

After you have a period of time for amativeness,you have to make a single live.only if you do like this you will find youself in the love and then you can understand how to cherish youself more

单身贵族，更多的是希望有一个固定的女朋友，最好不要结婚。其实单身贵族的出现，也只是被逼的，越来越大的压力，让不少选择单身，毕竟这样的压力要小一些。

Hong Tao of director of institute of economy of business of Beijing industrial and commercial college expresses,"Apanage management sets " apply to place only, if be entered to electronic commerce industry,can guild regulations model, need has national regulation to come on stage, this respect is at present blank still, hard to avoid can appear outside superintending " the fish of escape unpunished ".

北京工商大学商业经济研究所所长洪涛表示，"属地治理规定"只适用于当地，可假如对电子商务行业进行规范，需要有全国性的规定出台，现在这方面还是空白，难免会出现监管外的"漏网之鱼"。

This would be possible only if you will do something to make your face expressive and appealing.

这将有可能只有当您将做些什么，使你的脸表现力和吸引力。

Only if they are audacious can they inspire you and those who hear you.

只有胆大而创新的目标才能激励你，以及激励那些听从你的人。

I endeavored to convince him that the bodily strength afforded by beer could only be in proportion to the grain or flour of the barley dissolved in the water of which it was made; that there was more flour in a pennyworth of bread; and therefore, if he could eat that with a pint of water, it would give him more strength than a quart of beer.

我极力向他解说，啤酒提供给人身体的强健只不过是大麦的一粒麦或麦粉融在水中成比例，啤酒就是这样制造的，而一便士面包中麦粉就更多了；因此，你吃一块面包和一品脱的水，它能够给你比一品脱的啤酒还要多的体力。

I am always amazed when I hear people saying that sport creates goodwill between the nations, and that if only the co mmon peoples of the world could meet one another at football or cricket, they would have no inclination to meet on the batt lefield.

每次我听说体育运动能够在国家间建立起友好感情，说世界各地的普通人只要能在足球场或板球场上相遇就会没有兴趣在战场上相遇的话，我都倍感诧异。

It'sa world class bumbler, never learns from its mistakes, and only succeeds, in Kolko's words, in making an "unstable world far more precarious" than if it left well enough alone.

这是一个世界级的bumbler ，从来没有学会从自己的错误，只有成功，在科尔科的话，使一个"不稳定的世界更为危险的"，如果不是左不够好就有。

If she only dared pull one out of the bundle, strike it on the wall, and warmher fingers!

只要她敢抽出一根来，在墙上擦一下，暖一暖手就好了！

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。